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Agnostoid Biostratigraphy Across the Middle–Upper Cambrian Boundary in Hunan, China

Published online by Cambridge University Press:  11 August 2017

Shanchi Peng  and
Richard A. Robison
Shanchi Peng
Affiliation:
Nanjing Institute of Geology and Palaeontology, Academia Sinica, Nanjing, 210008, People's Republic of China
Richard A. Robison
Affiliation:
Department of Geology, University of Kansas, Lawrence, Kansas 66045
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Abstract

Many trilobite species of the order Agnostida have short stratigraphic ranges and global distribution in open-marine deposits. They are most abundant and most diverse from about the middle Middle Cambrian to the middle Upper Cambrian where they are proving to be excellent biostratigraphic indices. We describe unusually rich agnostoid faunas of that age from two thick, well-exposed sections, one near Paibi and one near Wangcun, in northwestern Hunan Province, China. All collections are from the Huaqiao Formation, the definition of which is revised and its stratigraphic content is expanded. Most of the fossils are well preserved in dark, laminated, argillaceous carbonates that were deposited in lower slope environments. These are assigned to 76 species and 33 genera. New species described are Agnostus? babcocki, Ammagnostus? cryptus, Ammagnostus histus, Ammagnostus hunanensis, Ammagnostus wangcunensis, Baltagnostus? ambonus, Linguagnostus stenus, Lisogoragnostus hybus, Lisogoragnostus mictus, and Utagnostus songae. Species reassigned in a new generic combination are Ammagnostus laiwuensis (Lorenz, 1906), Glaberagnostus? cicer (Tullberg, 1880), Kormagnostus minutus (Schrank, 1975), and Pseudophalacroma scanense (Westergård, 1946). The subfamily Ammagnostinae öpik, 1967, is elevated to family rank.

The bases of eight agnostoid biozones are defined by the lowest occurrence of a common species having a relatively short stratigraphic range and wide geographic distribution. In ascending order, these zones are named for Ptychagnostus atavus, Ptychagnostus punctuosus, Goniagnostus nathorsti, Lejopyge laevigata, Proagnostus bulbus, Linguagnostus reconditus, Glyptagnostus stolidotus, and Glyptagnostus reticulatus. Each zone is further characterized by an assemblage of agnostoid species that may vary from place to place. By extrapolating from recently published uranium-lead geochronology, we estimate that the average duration of these agnostoid zones was approximately one million years.

Formal division of the Cambrian System into global series and stages is a current project of the International Subcommission on Cambrian Stratigraphy. If the base of an upper Cambrian series of whatever name is selected to correlate closely with the traditional Middle-Upper Cambrian boundary in Europe, we propose the base of the Linguagnostus reconditus Zone in the Wangcun section as a potential Global Standard Stratotype-section and Point (GSSP). Alternatively, if the base of an upper Cambrian series is selected to coincide with the base of the Glyptagnostus reticulatus Zone, we propose the base of that zone in the Paibi section as a potential GSSP.

Type
Research Article
Information
Journal of Paleontology , Volume 74 , Issue S53: Paleontological Society Memoir 53. Agnostid Biostratigraphy across the middle-upper Cambrian Boundary in Hunan, China , July 2000 , pp. 1 - 104
Copyright
Copyright © 2000, The Paleontological Society 

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References

The names of Chinese authors published in English are spelled below as they are in the original publication. Spelling of these names may differ from the Standard Spelling of Chinese Names, which was officially adopted by the People's Republic of China in May, 1974. In transliteration of names from Chinese to English, we use 1974 standard spellings. If the name of one author has two spellings below, in whatever languages, the alternative spelling follows in brackets; for example, Chu, C.-L. [Zhu, Z.-L.], and Zhu, Z.-L. [Chu, C.-L.].Google Scholar
Ahlberg, P., and Ahlgren, J. 1996. Agnostids from the Upper Cambrian of Västergötland, Sweden. Geologiska Föreningens i Stockholm Förhandlingar, 118:129–140.Google Scholar
Angelin, N. P. 1851. Palaeontologia Suecica, Pars I: Iconographia Crustaceorum Formationis Transitionis. Weigel, Lund, 24 p.Google Scholar
Anonymous. 1974. Regional Stratigraphic Chart of South-Central China. Geological Publishing House, Beijing, 534 p. (In Chinese) Google Scholar
Astashkin, V. A., Pegel, T. V., Shabanov, Y. YA., Sukhov, S. S., and Sundukov, V. M. 1991. The Cambrian System on the Siberian Platform. International Union of Geological Sciences, Publication 27, 133 p.Google Scholar
Bell, W. C., and Ellinwood, H. L. 1962. Upper Franconian and lower Trempealeauan Cambrian trilobites and brachiopods, Wilberns Formation, central Texas. Journal of Paleontology, 36:385–423.Google Scholar
Belt, T. 1867. On some new trilobites from the Upper Cambrian rocks of north Wales. Geological Magazine, 4:294–295.Google Scholar
Berg-Madsen, V. 1985. The Middle Cambrian of Bornholm, Denmark: a stratigraphical revision of the lower alum shale and associated anthraconites. Geologiska Föreningens i Stockholm Förhandlingar, 106(4):357–376.CrossRefGoogle Scholar
Bergeron, M. J. 1899. Ètude de quelques trilobites de Chine. Bulletin de la Société géologique de France, Séries 3, 27:499–516.Google Scholar
Beyrich, E. 1845. Ueber einige böhmische Trilobiten. G. Reimer, Berlin, 47 p.Google Scholar
Blaker, M. R., and Peel, J. S. 1997. Lower Cambrian trilobites from North Greenland. Meddelelser om Gr⊘nland, Geoscience 35, 145 p.Google Scholar
Bordonaro, O., and Liñán, E. 1994. Some Middle Cambrian agnostoids from the Precordillera Argentina. Revista Española de Paleontología, 9:105–114.Google Scholar
Bordonaro, O., and Banching, A. L. 1995. Trilobites laurenticos en el Cambrico de la Precordillera Argentina. VI Congreso Argentino de Paleontología y Bioestratigrafía, Actas, p. 59–65.Google Scholar
Borovikov, L. I., and Kryskov, L. N. 1963. Cambrian deposits of the Kendyktas Mountains (southern Kazakhstan). National Geological Committee of the U.S.S.R., Transactions of the All-Union Scientific Research Institute of Geology (VSEGEI), New Series, 94:266–280. (In Russian)Google Scholar
Bowring, S. A., and Erwin, D. H. 1998. A new look at evolutionary rates in deep time: uniting paleontology and high-precision geochronology. GSA Today, 8(9): 1–8.Google Scholar
Br⊘gger [Brögger], W. C. 1878. Om paradoxidesskifrene ved Krekling. Nyt Magazin for Naturvidenskaberne, 24:1–88.Google Scholar
Br⊘gger [Brögger], W. C. 1882. Die silurischen Etagen 2 und 3 im Kristianiagebiet und auf Eker, ihre Gliederung, Fossilien, Schichtenstörungen und Kontact-metamorfosen. A. W. Brögger, Kristiania [Oslo], 376 p.Google Scholar
Brongniart, A. 1822. Les trilobites, p. 1–65. In Brongniart, A. and Desmarest, A.-G., Histoire naturelle de crustacés fossiles, sous les rapports zoölogiques et géologiques. F.-G. Lavrault, Paris.Google Scholar
Bruton, D.L., Harper, D. A. T., Gunby, I., and Naterstad, J. 1984. Cambrian and Ordovician fossils from the Hardangervidda Group, Haukelifjell, southern Norway. Norsk Geologisk Tidsskrift, 64:313–324.Google Scholar
Buchholz, A. 1997. Trilobiten mittelkambrischer Geschiebe aus Mecklenburg und Vorpommern (Norddeutschland). Archiv für Geschiebekunde, 4:187–260.Google Scholar
Butts, C. 1926. The Paleozoic rocks, p. 41–230. In Adams, G. I., Butts, C., Stephenson, L. W., and Cooke, W., Geology of Alabama. Geological Survey of Alabama, Special Report 14.Google Scholar
Chatterton, B. D. E., and Speyer, S. E. 1997. Ontogeny, p. 173–247. In Kaesler, R. L. (ed.), Treatise on Invertebrate Paleontology, Pt. O, Arthropoda 1; Trilobita (Revised). 1. Geological Society of America and University of Kansas, Boulder, Colorado, and Lawrence, Kansas.Google Scholar
Chatterton, B. D. E., and Ludvigsen, R. 1998. Upper Steptoean (Upper Cambrian) trilobites from the McKay Group of southeastern British Columbia, Canada. Paleontological Society Memoir 49, 43 p.Google Scholar
Chen, Y.-Y. [see Qian, Y.-Y.]Google Scholar
Choi, D. K., and Lee, J. G. 1995. Occurrence of Glyptagnostus stolidotus Öpik, 1961 (Trilobita, Late Cambrian) in the Machari Formation of Korea. Journal of Paleontology, 69:590–594.Google Scholar
Chu, C.-L. [Zhu, Z.-L.] 1959. Trilobites from the Kushan Formation of north and northeastern China. Memoirs of the Institute of Palaeontology, Academia Sinica, 2:44–128. (In Chinese and English)Google Scholar
Chu, C.-L. [Zhu, Z.-L.] 1960. Middle Cambrian trilobites from Datong, Qinghai. Geological Annals of the Qilian Mountain Region, 4(1):69–74. (In Chinese) Google Scholar
Chu, C.-L. [Zhu, Z.-L.] 1965. Some Middle Cambrian trilobites from Huzhu, Tsinghai. Acta Palaeontologica Sinica, 13:133–149. (In Chinese with English summary)Google Scholar
Clarkson, E. N. K., Ahlberg, P., and Taylor, C. M. 1998. Faunal dynamics and microevolutionary investigation in the Upper Cambrian Olenus Zone at Andrarum, Skåne, Sweden. Geologiska Föreningens i Stockholm Förhandlingar, 120:257–267.Google Scholar
Cobbold, E. S., and Pocock, R. W. 1934. The Cambrian area of Rush-ton (Shropshire). Philosophical Transactions of the Royal Society of London, Series B, 223:305–409.Google Scholar
Cooper, R. A., Jago, J. B., and Begg, J. G. 1996. Cambrian trilobites from Northern Victoria Land, Antarctica, and their stratigraphic implications. New Zealand Journal of Geology and Geophysics, 39:363–387.Google Scholar
Daily, B., and Jago, J. B. 1975. The trilobite Lejopyge Hawle and Corda and the Middle-Upper Cambrian boundary. Palaeontology, 18:527–550.Google Scholar
Dalman, J. W. 1828. Årsberättelse om nyare zoologiska arbeten och upptäcker. Kongl. Vetenskaps Academiens Embetsmän. P. A. Norstedt & Söner, Stockholm, 138 p.Google Scholar
Dawson, J. W. 1868. Acadian Geology (second edition). MacMillan and Company, London, 694 p.Google Scholar
Dong, X.-P. 1990. A potential candidate for the Middle-Upper Cambrian boundary stratotype–an introduction to the Paibi section in Huayuan, Hunan. Acta Geologica Sinica, 1990(1):62–79. (In Chinese with English abstract) Google Scholar
Dong, X.-P. 1991. Late Middle and early Late Cambrian agnostids in Huayuan, Hunan. Acta Palaeontologica Sinica, 30:439–457. (In Chinese with English abstract)Google Scholar
Eby, R. G. 1979. Early Late Cambrian agnostoid faunas from Utah and Nevada. Unpublished Master of Science thesis, State University of New York, Stony Brook, 152 p.Google Scholar
Egorova [Jegorova or Yegorova], L. I., Pegel, T. V., and Chernysheva, N. E. 1982. Description of trilobites, p. 56–126. In Egorova, L. I., Shabanov, Y. Y., Pegel, T. V., Savitsky, V. E., Suchov, S. S., and Chernysheva, N. E., Maya Stage of Type Locality (Middle Cambrian of Siberian platform). Academy of Sciences of the U.S.S.R., Ministry of Geology of the U.S.S.R., Interdepartmental Stratigraphic Committee of the U.S.S.R., Transactions 8. (In Russian) Google Scholar
[Jegorova or Yegorova], Egorova, Xiang [Hsiang], L.-W., Li, S.-J., Nan, R.-S., and Guo [Kuo], Z.-M. 1963. Cambrian trilobite faunas of Guizhou and western Hunan. Institute of Geological and Mineral Resources, Special Paper, Series B, Stratigraphy and Palaeontology, 3(1):1–117. (In Chinese) Google Scholar
Yegorova], Egorova [Jegorova or, Shabanov, Yu. Ya., Rozanov, A. Y., Savitsky, V. E., Chernysheva, N. E., and Shishkin, B. B. 1976. Elansky and Kuonamsky facies stratotypes of the lower boundary of the Middle Cambrian in Siberia. Ministry of Geology of the U.S.S.R., Siberian Scientific Research Institute of Geology, Geophysics, and Mineral Raw Material (SNIIGGMS), Transactions 211, 167 p. (In Russian) Google Scholar
[Jegorova or Yegorova], Egorova, Ivshin, N. K., Pokrovskaya, N. V., Poletaeva, O. K., Repina, L. N., Rozova, A. V., Romanenko, E. V., Sivov, A. G., Tomashpoyskaya, V. D., Fedjianina, E. S., and Chernysheva, N. E. 1960. Phylum Arthropoda, p. 152–253. In Khalfin, L. L. (ed.), Palaeozoic biostratigraphy of the Sayan-Altai mountain region, Pt. 1, Lower Palaeozoic. Ministry of Geology and Protection of Mineral Resources of the U.S.S.R., Siberian Scientific Research Institute of Geology, Geophysics and Mineral Raw Material (SNIIGGIMS), Transactions 19. (In Russian) Google Scholar
Endo, R. 1944. Restudies on the Cambrian formations and fossils in southern Manchoukuo. Central National Museum of Manchoukuo, Bulletin 7:1–100.Google Scholar
Ergaliev, G. KH. 1980. Middle and Upper Cambrian trilobites of the Lesser Karatau Range. Academy of Sciences, Kazakhstan SSR, Publishing House of Kazakhstan SSR, Alma-Ata, 221 p. (In Russian) Google Scholar
Etheridge, R. Jr. 1902. Official contributions to the palaeontology of South Australia, no. 13; evidence of further Cambrian trilobites. South Australian Parliamentary Papers, p. 3–4.Google Scholar
Fedjanina, E. S. 1977. Trilobites of the Orlinogorskoi Formation (Orlinaya Mountains, north-east Salair), p. 145–152. In Zhuravleva, I. T. and Rozova, A. V. (eds.), Biostratigraphy and Fauna of the Upper Cambrian and its Boundary Layers (New Data from the Asiatic Regions of the USSR). Academy of Sciences of the U.S.S.R., Siberian Branch, Institute of Geology and Geophysics, Transactions 313. (In Russian) Google Scholar
Fortey, R. A., and Barnes, C. R. 1977. Early Ordovician conodont and trilobite communities of Spitsbergen: influence on biogeography. Alcheringa, 1(3):297–309.Google Scholar
Fortey, R. A., and Owens, R. M. 1987. The Arenig Series in south Wales. Bulletin of the British Museum (Natural History), 41(3):69–307.Google Scholar
Fortey, R. A., and Owens, R. M. 1999. Feeding habits in trilobites. Palaeontology, 42: 429–465.Google Scholar
Fortey, R. A., and Rushton, A. W. A. 1976. Chelidonocephalus trilobite fauna from the Cambrian of Iran. Bulletin of the British Museum (Natural History), 27(4):321–340.CrossRefGoogle Scholar
Gao, Z.-Z., and Duan, T.-Z. 1985. Gravity-displaced deposits of Cambrian deep-water carbonates in western Hunan and eastern Guizhou. Acta Sedimentologica Sinica, 3(3):7–22. (In Chinese) Google Scholar
Gogin, I. Y., and Pegel, T. V. 1997. Middle and Upper Cambrian trilobites from the western part of Sette-Dabana, p. 100–132. In Gogin, I. Y., Koren, T. N., and Pegel, T. V., Atlas of Zonal Complexes of Leading Groups of Early Paleozoic Faunas of North Russia; Graptolites and Trilobites. All-Russian Scientific Research Institute of Geology (VSEGEI). VSEGEI Press, Saint Petersburg. (In Russian) Google Scholar
Grabau, A. W., and Shimer, H. W. 1910. North American Index Fossils; Invertebrates, Volume 2. A. G. Seiler & Company, New York, 909 p.Google Scholar
Grönwall, K. A. 1902. Bornholms Paradoxideslag og deres Fauna. Danmarks geologiske Unders⊘gelse, series 2, number 13, 230 p.Google Scholar
Guo, H.-J., Zan, S.-Q., and Luo, K.-L. 1996. Cambrian stratigraphy and trilobites of eastern Liaoning. Jilin University Press, Changchun, 184 p. (In Chinese with English summary) Google Scholar
Hajrullina [Khajrullina], T. I. 1970. Trilobites of the Maya Stage of the Turkestan ranges, p. 5–53. In Shayukuboe, T. S. (ed.), Biostratigraphy of the Sedimentary Formations of Uzbekistan, 9, Nedra, Leningrad. (In Russian) Google Scholar
Hajrullina [Khajrullina], T. I. 1973. Biostratigraphy and trilobites of the Maiskov Stage, Middle Cambrian of the Turkestan Mountains. Ministry of Geology, Uzbekistan SSR, Tashkent, 112 p. (In Russian) Google Scholar
Hall, J. 1863. Preliminary notice of the fauna of the Potsdam Sandstone; with remarks upon the previously known species of fossils and descriptions of some new ones, from the sandstone of the Upper Mississippi Valley. New York State Cabinet of Natural History, 16th Annual Report, p. 119–222.Google Scholar
Hall, J. 1867. Preliminary notice of the fauna of the Potsdam Sandstone. Transactions of the Albany Institute, 5:93–195.Google Scholar
Hall, J., and Whitfield, R. P. 1877. Paleontology, Pt. II, Fossils of the Postdam Group, p. 198–302. In King, C., Report of the United States Geological Exploration of the Fortieth Parallel, Volume 4, U.S. Army Engineer Department.Google Scholar
Hawle, I., and Corda, A. J. C. 1847. Prodrom einer Monographie der böhmischen Trilobiten. Abhandlungen der königliche böhmischen Gesellschaft der Wissenschaften, 5:1–176.Google Scholar
Henderson, R. A. 1976. Upper Cambrian (Idamean) trilobites from western Queensland, Australia. Palaeontology, 19:325–364.Google Scholar
Henningsmoen, G. 1958. The Upper Cambrian faunas of Norway: with descriptions of non-olenid invertebrate fossils. Norsk geologisk tidsskrift, 38:179–196.Google Scholar
Hicks, H. 1872. On some undescribed fossils from the Menevian Group. Quarterly Journal of the Geological Society (London), 28:173–185.Google Scholar
Hill, D., Playford, G., and Woods, J. T. (eds.). 1971. Cambrian fossils of Queensland. Queensland Palaeontographical Society, Brisbane, 32 p.Google Scholar
Holm, G., and Westergård, A. H. 1930. A Middle Cambrian fauna from Bennett Island. Mémoires de l'Académie de Sciences de L'URSS, Leningrad, 21(8):1–25.Google Scholar
Horný, R., and Bastl, F. 1970. Type Specimens of Fossils in the National Museum, Prague, Volume 1, Trilobita. Museum of Natural History, Prague, 354 p.Google Scholar
Howell, B. F. 1935a. New Middle Cambrian agnostian trilobites from Vermont. Journal of Paleontology, 9:218–221.Google Scholar
Howell, B. F. 1935b. Cambrian and Ordovician trilobites from Hérault, southern France. Journal of Paleontology, 9:222–238.Google Scholar
Howell, B. F. 1935c. Some New Brunswick Cambrian agnostians. Bulletin of the Wagner Free Institute of Science, 10:13–17.Google Scholar
Howell, B. F. 1937. Cambrian Centropleura vermontensis fauna of northwestern Vermont. Geological Society of America Bulletin, 48:1147–1210.Google Scholar
Howell, B. F. 1955. Phalagnostus, new genus for trilobite Battus nudus Beyrich. Journal of Paleontology, 29:925–926.Google Scholar
Howell, B. F. 1959. Suborder Agnostina, p. 172–186. In Moore, R. C. (ed.), Treatise on Invertebrate Paleontology, Pt. O, Arthropoda 1. Geological Society of America and University of Kansas Press, Lawrence.Google Scholar
Hu, C.-H. 1971. Ontogeny and sexual dimorphism of lower Paleozoic Trilobita. Palaeontographica Americana, 7(44):27–155.Google Scholar
Hu, C.-H. 1972 Ontogeny of three Cedaria Zone trilobites from Upper Cambrian, Montana. Transactions and Proceedings of the Palaeontological Society of Japan, 85:245–259.Google Scholar
Hunan Bureau of Geology and Mineral Resources. 1988. Regional geology of Hunan Province. People's Republic of China, Ministry of Geology and Mineral Resources, Geological Memoirs, Series 1, 8:1–719. (In Chinese with English summary)Google Scholar
Hunt, A. S. 1967. Growth, variation, and instar development of an agnostid trilobite. Journal of Paleontology, 41:203–208.Google Scholar
Hutchinson, R. D. 1962. Cambrian stratigraphy and trilobite faunas of southeastern Newfoundland. Geological Survey of Canada, Bulletin 88:1–156.Google Scholar
Illing, V. C. 1916. The Paradoxidian fauna of a part of the Stockingford Shales. Quarterly Journal of the Geological Society, 71 (for 1915): 386–450.Google Scholar
International commisoin on Zoological Nomenclature. 1993. Opinion 1701; Ptychagnostus Jaekel, 1909 and Glyptagnostus Whitehouse, 1936 (Trilobita): accepted usage conserved. Bulletin of Zoological Nomenclature 50(1):63–64.Google Scholar
Ivshin, N. K. 1953. Middle Cambrian trilobites of Kazakhstan, Pt. 1. Institute of Geological Sciences, Academy of Sciences of the Kazakh SSR, Publishing House of the Academy of Sciences of the Kazakh SSR, Alma-Ata, 226 p. (In Russian) Google Scholar
Ivshin, N. K. 1956. Upper Cambrian trilobites of Kazakhstan, Pt. 1; Kuyandinsk faunal horizon between the Olenty and Shiderty rivers. Institute of Geological Sciences, Academy of Sciences of the Kazakh SSR, Publishing House of the Academy of Sciences of the Kazakh SSR, Alma-Ata, 98 p. (In Russian) Google Scholar
Ivshin, N. K. 1962. Upper Cambrian trilobites of Kazakhstan, Pt. 2. Institute of Geological Sciences, Academy of Sciences of the Kazakh SSR, Publishing House of the Academy of Sciences of the Kazakh SSR, Alma-Ata, 412 p. (In Russian) Google Scholar
Ivshin, N. K., and Pokrovskaya, N. V. 1968. Stage and zonal subdivision of the Upper Cambrian. Twenty-third International Geological Congress, Prague, Proceedings of Section 9, p. 97–108.Google Scholar
Jaekel, O. 1909–1910. Über die Agnostiden. Zeitschrift der Deutschen Geologischen Gesellschaft, 61:380–401.Google Scholar
Jago, J. B. 1973. Cambrian agnostid communities in Tasmania. Lethaia 6:405–421.Google Scholar
Jago, J. B. 1974. Glyptagnostus reticulatus from the Huskisson River, Tasmania. Papers and Proceedings of the Royal Society of Tasmania, 107:117–127.Google Scholar
Jago, J. B. 1976a. Late Middle Cambrian agnostid trilobites from northwestern Tasmania. Palaeontology, 19:133–172.Google Scholar
Jago, J. B. 1976b. Late Middle Cambrian agnostid trilobites from the Gunns Plains area, northwestern Tasmania. Papers and Proceedings of the Royal Society of Tasmania, 110:1–18.CrossRefGoogle Scholar
Jago, J. B. 1987. Idamean (Late Cambrian) trilobites from the Denison Range, south-west Tasmania. Palaeontology, 30:207–231.Google Scholar
Jago, J. B., and Brown, A. V. 1992. Early Idamean (Late Cambrian) agnostoid trilobites from the Huskisson River, Tasmania. Papers and Proceedings of the Royal Society of Tasmania, 126:59–65.Google Scholar
Jago, J. B., and Daily, B. 1974. The trilobite Clavagnostus Howell from the Cambrian of Tasmania. Palaeontology, 17: 95–109.Google Scholar
Jago, J. B., and Haines, P. W. 1998. Recent radiometric dating of some Cambrian rocks in southern Australia: relevance to the Cambrian time scale. Revista Española de Paleontología, número extraordinario homenaje al Professor Gonzalo Vidal, p. 115–122.Google Scholar
Jago, J. B., and Webers, G. F. 1992. Middle Cambrian trilobites from the Ellsworth Mountains, West Antarctica, p. 101–124. In Webers, G. F., Craddock, C., and Splettstoesser, J. F. (eds.), Geology and Paleontology of the Ellsworth Mountains, West Antarctica. Geological Society of America, Memoir 170.Google Scholar
Jegorova, L. I. [see Egorova, L. I.]Google Scholar
Jell, P. A., and Hughes, N. C. 1997. Himalayan Cambrian trilobites. Special Papers in Palaeontology, 58, 113 p.Google Scholar
Jell, P. A., and Robison, R. A. 1978. Revision of a late Middle Cambrian trilobite faunule from northwestern Queensland. University of Kansas Paleontological Contributions, Paper, 90, 21 p.Google Scholar
Khajrullina, T. I. [see Hajrullina, T. I.]Google Scholar
Kindle, C. H. 1982. The C. H. Kindle Collection: Middle Cambrian to Lower Ordovician trilobites from the Cow Head Group, western Newfoundland. Geological Survey of Canada, Paper, 82-1C: 1–17.Google Scholar
Kobayashi, T. 1933. Upper Cambrian of the Wuhutsui basin, Liaotung, with special reference to the limit of the Chaumitian (or Upper Cambrian), of eastern Asia, and its subdivision. Japanese Journal of Geology and Geography, 11:55–155.Google Scholar
Kobayashi, T. 1935. The Cambro-Ordovician formations and faunas of South Chosen; Palaeontology, Pt. III, Cambrian faunas of South Chosen with a special study on the Cambrian trilobite genera and families. Journal of the Faculty of Science, Imperial University of Tokyo, 4(2):49–344.Google Scholar
Kobayashi, T. 1937. The Cambro-Ordovician shelly faunas of South America. Journal of the Faculty of Science, Imperial University of Tokyo, 4(4):369–522.Google Scholar
Kobayashi, T. 1938a. Upper Cambrian fossils from British Columbia with a discussion on the isolated occurrence of the so-called “Olenus” beds of Mount Jubilee. Japanese Journal of Geology and Geography, 15:149–192.Google Scholar
Kobayashi, T. 1938b. Restudy on the Lorenzís types of the Cambrian trilobites from Shantung. Journal of the Geological Society of Japan, 45:881–890.Google Scholar
Kobayashi, T. 1939a. On the agnostids (Part 1). Journal of the Faculty of Science, Imperial University of Tokyo, Section II, 5(5):69–198.Google Scholar
Kobayashi, T. 1939b. Supplementary notes on the Agnostida. Journal of the Geological Society of Japan, 46:577–580.Google Scholar
Kobayashi, T. 1944. Cambrian faunas of Siberia. Journal of the Faculty of Science, Imperial University of Tokyo, Section II, 6(12):271–334.Google Scholar
Kobayashi, T. 1949. The Glyptagnostus hemera, the oldest world-instant. Japanese Journal of Geology and Geography, 21:1–6.Google Scholar
Kobayashi, T. 1961. The Cambro-Ordovician formations and faunas of South Korea, Pt. 8, Palaeontology 7, Cambrian faunas of the Mun'gyong (Bunkei) District and the Samposan Formation of the Yongwol (Neietsu) District. Journal of the Faculty of Science, University of Tokyo, Section II, 13(2): 181–241.Google Scholar
Kobayashi, T. 1962. The Cambro-Ordovician formation and faunas of South Korea, Pt. 9, Palaeontology 8, the Machari fauna. Journal of the Faculty of Science, University of Tokyo, Section II, 14(1):1–152.Google Scholar
Koch, L. 1999. Corrugatagnostus (Metagnostidae, Trilobita) aus dem Ordovizium des Ebbe-Sattels (Rheinisches Schiefergebirge, Deutschland). Geologica et Palaeontologica 33:9–19.Google Scholar
Kryskov, L. N., Lazarenko, N. P., Ogienko, L. V., and Chernysheva, N. E. 1960. New early Palaeozoic trilobites of eastern Siberia and Kazakhstan, p. 211–255. In Markovsky, B. P. (ed.) New Species of Ancient Plants and Invertebrates of the SSSR, Pt. 2. State Science and Technology Press for Literature on Geology and Protection of Mineral Resources, Moscow. (In Russian) Google Scholar
Lake, P. 1906. A monograph of the British Cambrian trilobites, Part 1. Palaeontographical Society, London, 28 p.Google Scholar
Landing, E. 1998. Avalon 1997-a pre-meeting viewpoint, p. 1–3. In Landing, E. and Westrop, S. R. (eds.), Avalon 1997—the Cambrian Standard. New York State Museum Bulletin 492.Google Scholar
Laurie, J. R. 1988. Revision of some Australian Ptychagnostinae (Agnostida, Cambrian). Alcheringa, 12:169–205.Google Scholar
Laurie, J. R. 1989. Revision of species of Goniagnostus Howell and Lejopyge Corda from Australia (Agnostida, Cambrian). Alcheringa, 13:175–191.Google Scholar
Lazarenko, N. P. 1966. Biostratigraphy and some new Upper Cambrian trilobites from the Oleneksk uplift and the Kharaulakhsk Mountains. Paleontology and Biostratigraphy, 11:33–78. (In Russian)Google Scholar
Lazarenko, N. P., and Nikiforov, N. I. 1968. Trilobite assemblage from Upper Cambrian deposits on the River Kulyumbe (northwestern Siberian platform). Study-report of the Scientific Research Institute of Arctic Geology, Ministry of Geology of the USSR, Palaeontology and Biostratigraphy, 23:20–80. (In Russian)Google Scholar
Lee, J. G., and Choi, D. K. 1994. Glyptagnostus and associated trilobites from the Machari Formation, Yeongweol, Korea. Journal of the Paleontological Society of Korea, 10(1):117–136.Google Scholar
Lee, J. G., and Choi, D. K. 1995. Late Cambrian trilobites from the Machari Formation, Yeongweol-Machari area, Korea. Journal of the Paleontological Society of Korea, 11(1): 1–46.Google Scholar
Lenz, A. C., Edwards, L. E., and Pratt, B. R. 1997. Revision of the “Biostratigraphic units” section of the North American Stratigraphic Code. Episodes, 20:203–204.Google Scholar
Lermontova, E. V. 1940. Arthropoda, p. 112–157. In Vologdin, A. (ed.), Atlas of the Leading Forms of the Fossil Faunas of the USSR, Volume 1. Council of People's Commissars of the U.S.S.R., Geological Committee, All-Union Scientific Research Institute (VSEGEI), State Publishing House of Geological Literature, Moscow-Leningrad. (In Russian) Google Scholar
Lin, T.-R. 1991. Middle Cambrian stratigraphy and trilobite fauna of Taoyuan, NW Hunan. Acta Palaeontologica Sinica, 30:360–376. (In Chinese with English summary)Google Scholar
Lin, T.-R., Lin, H.-L., and Zhou, T.-Y. 1983. Discovery of the Cambrian trilobites in Kunshan of southeast Jiangsu with reference to the faunal provinciality and palaeogeography. Acta Palaeontologica Sinica, 22:399–410. (In Chinese with English summary)Google Scholar
Linnarsson, J. G. O. 1869. Om Vestergötlands Cambriska och Siluriska aflagringar. Kongliga Svenska Vetenskaps-Akademiens Handlingar, 8(2):1–89.Google Scholar
Lisogor, K. A., Rozov, S. N., and Rozova, A. V. 1988. Correlation of Middle Cambrian deposits of the Lesser Karatau and Siberian platform according to trilobites, p. 54–82. In Zhuravleva, I. T. and Repina, L. N. (eds.), Cambrian of Siberia and Middle Asia. Academy of Sciences of the USSR, Siberian Branch, Institute of Geology and Geophysics, Transactions 720. (In Russian) Google Scholar
Liu, Y.-R. 1982. Trilobita, p. 290–347. In Li, S.-Q. (ed.), Palaeontological Atlas of Hunan. Ministry of Geological and Mineral Resources, Peopleís Republic of China, Geological Memoirs, Series 2, Number 1. (In Chinese) Google Scholar
Lochman, C. 1940. Fauna of the basal Bonneterre Dolomite (Upper Cambrian) of southeastern Missouri. Journal of Paleontology, 14:1–53.Google Scholar
Lochman, C. 1964. Upper Cambrian faunas from the subsurface Deadwood Formation, Williston basin, Montana. Journal of Paleontology, 38:33–60.Google Scholar
Lochman, C., and Duncan, D. 1944 Early Upper Cambrian faunas of central Montana. Geological Society of America, Special Paper, 54, 181 p.Google Scholar
Lochman, C., and Hu, C.-H. 1959. A Ptychaspis faunule from the Bear River Range, southeastern Idaho. Journal of Paleontology, 33:404–427.Google Scholar
Lorenz, T. 1906. Beiträge zur Geologie und Palaeontologie von Ostasien unter besonderer Berücksichtigung der Provinz Schantung in China. Zeitschrift der Deutschen geologischen Gesellschaft, 58:53–108.Google Scholar
Lu, Y.-H. 1957. Trilobites, p. 249–294. In Gu, Z.-W. et al. (eds.), Index Fossils of China, Invertebrates, Pt. 3. Geological Publishing House, Beijing. (In Chinese) Google Scholar
Lu, Y.-H. 1962 (reprinted 1965). Cambrian trilobites, p. 25–35. In Wang, Y. (ed.), A Handbook of Index Fossils of the Yangtze Region. Science Press, Beijing. (In Chinese) Google Scholar
Lu, Y.-H. 1963. Cambrian trilobites, p. 24–32. In Zhao, J.-K. (ed.), A Handbook of Index Fossils of Northwest China. Science Press, Beijing. (In Chinese) Google Scholar
Lu, Y.-H. 1964. Cambrian trilobites, p. 26–39. In Wang, Y. (ed.), A Handbook of Index Fossils of Southern China. Science Press, Beijing. (In Chinese) Google Scholar
Lu, Y.-H., and Lin, H.-L. 1981. Zonation of Cambrian faunas in western Zhejiang and their correlation with faunas in North China, Australia, and Sweden, p. 118–120. In Taylor, M. E. (ed.), Short Papers for the Second International Symposium on the Cambrian System. U.S. Geological Survey Open-File Report 81–743.Google Scholar
Lu, Y.-H., and Lin, H.-L. 1983. Zonation and correlation of Cambrian faunas in W. Zhejiang. Acta Geologica Sinica, 57:317–328. (In Chinese with English abstract)Google Scholar
Lu, Y.-H., and Lin, H.-L. 1989. The Cambrian trilobites of western Zhejiang. Palaeontologia Sinica, Whole Number 178, New Series B, Number 25, 287 p. (In Chinese and English) Google Scholar
Lu, Y.-H., and Qian [Chen], Y.-Y. 1983, Cambro-Ordovician trilobites from eastern Guizhou. Palaeontologia Cathayana, 1:1–105.Google Scholar
Lu, Y.-H., and Zhu, Z.-L. 1980. Cambrian trilobites from Chuxian-Quanjiao region, Anhui. Memoir of the Nanjing Institute of Geology and Palaeontology, Academia Sinica, 16:1–32. (In Chinese with English abstract)Google Scholar
Lu, Y.-H., Zhang [Chang], W.-T., Chu, C.-L. [Zhu, Z.-L.], Chen [Qian], Y.-Y., and Xiang [Hsiang], L.-W. 1965. Chinese Fossils of All Groups, Trilobites of China; 1:1–362, 2:363–766. Science Press, Beijing. (In Chinese) Google Scholar
Lu, Y.-H., Zhu, Z.-L., Qian, Y.-Y., Lin, H.-L., Zhou, Z.-Y., and Yuan, K.-X. 1974. Bio-environmental control hypothesis and its application to Cambrian biostratigraphy and palaeozoogeography. Memoir of the Nanjing Institute of Geology and Palaeontology, Academia Sinica, 5:27–110. (In Chinese) Google Scholar
Ludvigsen, R., and Westrop, S. R. 1985. Three new Upper Cambrian stages for North America. Geology, 13:139–143.Google Scholar
Ludvigsen, R., Westrop, S. R., and Kindle, C. H. 1989. Sunwaptan (Upper Cambrian) trilobites of the Cow Head Group, western Newfoundland, Canada. Palaeontographica Canadiana, 6, 175 p.Google Scholar
Mansuy, H. 1916. Faunes cambriennes de 1′ Extrême-Orient méridional. Mémoires du Service Géologique de l'Indochine, 5:1–48.Google Scholar
Matthew, G. F. 1886 [dated 1885]. Illustrations of the fauna of the St. John Group continued, No. III; descriptions of new genera and species (including a description of a new species of Solenopleura by J. F. Whiteaves). Transactions of the Royal Society of Canada, 3(4):29–84.Google Scholar
Matthew, G. F. 1896. Faunas of the Paradoxides beds in eastern North America, No. 1. Transactions of the New York Academy of Sciences, 15:192–247.Google Scholar
Matthew, G. F. 1897. Studies on Cambrian faunas. Transactions of the Royal Society of Canada, 3(4):165–211.Google Scholar
M'Coy, F. 1849. On the classification of some British fossil Crustacea with notices of some new forms in the University collection at Cambridge. Annals and Magazine of Natural History (series 2), 4:161–179, 330–335, 392–414.Google Scholar
Monke, H. 1903. Beitrage zur Geologie von Schantung, 1; Obercambrische trilobiten von Yen-tsy-yai. Jahrbuch der Königliche Preussische Geologische Landesanstalt und Bergakademie, 23:103–151.Google Scholar
Morris, S. F. 1988. A review of British trilobites, including a synoptic revision of Salterís monograph. Monograph of the Palaeontographical Society, 574, 316 p.Google Scholar
Müller, K. J., and Walossek, D. 1987. Morphology, ontogeny, and life habit of Agnostus pisiformis from the Upper Cambrian of Sweden. Fossils and Strata, 19:1–124.Google Scholar
Nan, R.-S. 1980. Trilobita, p. 484–519. In Shenyang Institute of Geology and Mineral Resources, Palaeontological Atlas of Northeast China, 1. Geological Publishing House, Beijing. (In Chinese) Google Scholar
Nicholas, T. C. 1916. Notes on the trilobite fauna of the Middle Cambrian of the St. Tudwal's Peninsula (Carnarvonshire). Quarterly Journal of the Geological Society, 71 (for 1915):451–472.Google Scholar
Nielsen, A. T. 1995. Trilobite systematics, biostratigraphy and palaeoecology of the Lower Ordovician Komstad Limestone and Huk Formations, southern Scandinavia. Fossils and Strata, 38:1–374.Google Scholar
Nielsen, A. T. 1997. A review of Ordovician agnostid genera (Trilobita). Transactions of the Royal Society of Edinburgh, Earth Sciences, 87:463–501.Google Scholar
Öpik, A. A. 1961a. Alimentary caeca of agnostid and other trilobites. Palaeontology, 3:410–438.Google Scholar
Öpik, A. A. 1961b. The geology and palaeontology of the headwaters of the Burke River, Queensland. Australia Bureau of Mineral Resources, Geology and Geophysics, Bulletin 53:1–249.Google Scholar
Öpik, A. A. 1963. Early Upper Cambrian fossils from Queensland. Australia Bureau of Mineral Resources, Geology and Geophysics, Bulletin 64:1–133.Google Scholar
Öpik, A. A. 1966. The early Upper Cambrian crisis and its correlation. Royal Society of New South Wales, Journal and Proceedings, 100:9–14.Google Scholar
Öpik, A. A. 1967. The Mindyallan fauna of northwestern Queensland. Australia Bureau of Mineral Resources, Geology and Geophysics, Bulletin 74; Volume 1, 404 p.; Volume 2, 167 p. with 67 plates.Google Scholar
Öpik, A. A. 1979. Middle Cambrian agnostids: systematics and biostratigraphy. Australia Bureau of Mineral Resources, Geology and Geophysics, Bulletin 172; Volume 1, 188 p.; Volume 2, 67 plates.Google Scholar
Palmer, A. R. 1955a [dated 1954]. The faunas of the Riley Formation in central Texas. Journal of Paleontology. 28:709–786.Google Scholar
Palmer, A. R. 1955b. Upper Cambrian Agnostidae of the Eureka district, Nevada. Journal of Paleontology, 29:86–101.Google Scholar
Palmer, A. R. 1960. Trilobites of the Upper Cambrian Dunderberg Shale, Eureka district, Nevada. U.S. Geological Survey, Professional Paper, 334-C, 109 p.Google Scholar
Palmer, A. R. 1962. Glyptagnostus and associated trilobites in the United States. U.S. Geological Survey, Professional Paper, 374-F, 49 p.Google Scholar
Palmer, A. R. 1968. Cambrian trilobites of east-central Alaska. U.S. Geological Survey, Professional Paper, 559-B, 115 p.Google Scholar
Palmer, A. R. 1972. Early and Middle Cambrian trilobites from Antarctica. U.S. Geological Survey, Professional Paper, 456-D, 37 p.Google Scholar
Palmer, A. R. 1998. A proposed nomenclature for stages and series for the Cambrian of Laurentia. Canadian Journal of Earth Sciences, 35:323–328.Google Scholar
Palmer, A. R., DeMis, W. D., Muehlberger, W. R., and Robison, R. A. 1984. Geological implications of Middle Cambrian boulders from the Haymond Formation (Pennsylvanian) in the Marathon basin, west Texas. Geology, 12:91–94.Google Scholar
Peng, S.-C. 1987. Early Late Cambrian stratigraphy and trilobite fauna of Taoyuan and Cili, Hunan, p. 53–134. In Nanjing Institute of Geology and Palaeontology, Academia Sinica, Collection of Postgraduate Theses, Nanjing Institute of Geology and Palaeontology, Academia Sinica, Volume 1. Jiangsu Science and Technology Publishing House, Nanjing. (In Chinese with English summary) Google Scholar
Peng, S.-C. 1990. Upper Cambrian in the Cili-Taoyuan area, Hunan, and its trilobite succession. Journal of Stratigraphy, 14:261–276. (In Chinese with English abstract)Google Scholar
Peng, S.-C. 1992. Upper Cambrian biostratigraphy and trilobite faunas of the Cili-Taoyuan area, northwestern Hunan, China. Association of Australasian Palaeontologists, Memoir 13, 119 p.Google Scholar
Peng, S.-C., Yuan, J.-L., and Zhao, Y-L. 2000. Taijiangian Stage: a new chronostratigraphic unit for the traditional Lower Middle Cambrian in South China. Journal of Stratigraphy, 24(1):53–54. (In Chinese with English abstract) Google Scholar
Peng, S.-C., Zhou, Z.-Y., Lin, T.-R., and Yuan, J.-L. 2000. Research on Cambrian chronostratigraphy: present and tendency. Journal of Stratigraphy, 24(1):8–17. (In Chinese with English abstract) Google Scholar
Pokrovskaya, N. V. 1958. Middle Cambrian agnostids of Yakutiya, Pt. 1. Transactions of the Geological Institute, Academy of Sciences of the U.S.S.R. (Moscow), 16:1–96. (In Russian)Google Scholar
Pokrovskaya, N. V. 1960. Order Miomera Jaekel, 1909, p. 54–61. In Chernysheva, N. E. (ed.), Principles of Paleontology. State Science and Technology Press for Literature on Geology and Protection of Mineral Resources, Moscow. (In Russian) Google Scholar
Poletaeva, O. K., and Romanenko, Y. V. 1970. Middle and Late Cambrian trilobites of the Altay. Paleontological Journal, 1970(2):72–83. (In Russian; also English edition, 1970(2):216–228).Google Scholar
Poulsen, C. 1923. Bornholms Olenuslag og deres Fauna. Danmarks geologiske Unders⊘gelse, series 2, 40:1–83.Google Scholar
Poulsen, C. 1960. Fossils from the late Middle Cambrian Bolaspidella zone of Mendoza, Argentina. Matematisk-fysiske Meddelelser, Det Kongelige Danske Videnskabernes Selskab, 32(11):1–42.Google Scholar
Pratt, B. R. 1992. Trilobites of the Marjuman and Steptoean stages (Upper Cambrian), Rabbitkettle Formation, southern Mackenzie Mountains, northwest Canada. Palaeontographica Canadiana, Number 9, 179 p.Google Scholar
Qian [Chen], Y.-Y. 1982. Ontogeny of Pseudagnostus benxiensis sp. nov. (Trilobita). Acta Palaeontologica Sinica, 21:632–643. (In Chinese with English summary)Google Scholar
Qian [Chen], Y.-Y., and Zhou, Z.-M. 1984. Middle and early Upper Cambrian trilobites from Kunshan, Jiangsu, with reference to their distribution in the lower Yangtze region. Acta Palaeontologica Sinica, 23:170–183. (In Chinese with English abstract)Google Scholar
Qiu, H.-A., Lum, Y.-H., Zhu, Z.-L., Bi, D.-C., Lin, T.-R., Zhang, Q.-Z., Qian, Y.-Y., Ju, T.-Y., Han, N.-R., and Wei, X.-Z. 1983. Trilobita, p. 28–254. In Nanjing Institute of Geology and Mineral Resources, Palaeontological Atlas of East China, 1; Volume of Early Paleozoic. Geological Publishing House, Beijing. (In Chinese) Google Scholar
Rasetti, F. 1948. Middle Cambrian trilobites from the conglomerates of Quebec (exclusive of the Ptychopariidea). Journal of Paleontology, 22:315–339.Google Scholar
Rasetti, F. 1961. Dresbachian and Franconian trilobites of the Conococheague and Frederick limestones of the central Appalachians. Journal of Paleontology, 35:104–124.Google Scholar
Rasetti, F. 1967. Lower and Middle Cambrian trilobite faunas from the Taconic sequence of New York. Smithsonian Miscellaneous Collections, 152(4), 111 p.Google Scholar
Rasetti, F., and Theokritoff, G. 1967. Lower Cambrian agnostid trilobites of North America. Journal of Paleontology, 41:189–196.Google Scholar
Raup, D. M., and Stanley, S. M. 1978. Principles of Paleontology (second edition). W. H. Freeman and Company, San Francisco, 481 p.Google Scholar
Reed, F. R. C. 1910. The Cambrian fossils of Spiti. Palaeontologia Indica (Memoirs of the Geological Survey of India), Series 15, 7:1–70.Google Scholar
Rees, M. N., Robison, R. A., Babcock, L. E., Chang, W. T., and Peng, S. C. 1992. Middle Cambrian eustasy: evidence from slope deposits in Hunan Province, China. Geological Society of America, Abstracts with Programs, 24(7):108.Google Scholar
Remane, J., Bassett, M. G., Cowie, J. W., Gohrbandt, K. H., Lane, H. R., Michelsen, O., and Wang, N.-W. 1996. Revised guidelines for the establishment of global chronostratigraphic standards by the International Commission on Stratigraphy (ICG). Episodes, 19:77–81.Google Scholar
Repina, L. N., Petrunina, Z. E., and Hajrullina, T. I. 1975. Trilobites, p. 100–233. In Repina, L. N., Yaskovich, B. V., Aksarina, N. A., Petrunina, Z. E., Poniklenko, I. A., Rubanov, D. A., Bolgova, G. V., Golikov, A. N., Hajrullina, T. I., and Posokhova, M. M., Stratigraphy and Fauna of Lower Paleozoic of the Northern Submontane Belt of Turkestan and the Alai Ridges (southern Tian Shan). Academy of Sciences of the U.S.S.R., Siberian Branch, Institute of Geology and Geophysics, Transactions 278. (In Russian) Google Scholar
Resser, C. E. 1938. Cambrian System (restricted) of the southern Appalachians. Geological Society of America, Special Paper, 15, 140 p.Google Scholar
Resser, C. E. 1939. The Spence Shale and its fauna. Smithsonian Miscellaneous Collections, 97(12), 29 p.Google Scholar
Resser, C. E., and Endo, R. 1937. Description of the fossils, p. 103–302. In Endo, R. and Resser, C. E., The Sinian and Cambrian Formations and Fossils of Southern Manchoukuo. Manchurian Science Museum, Bulletin 1.Google Scholar
Ritterbush, L. A. 1983. Position of the labrum in agnostid trilobites. Lethaia, 16:309–310.Google Scholar
Robison, R. A. 1960. Some Dresbachian and Franconian trilobites of western Utah. Brigham Young University Research Studies, 7(3)1–59.Google Scholar
Robison, R. A. 1964. Late Middle Cambrian faunas from western Utah. Journal of Paleontology, 38:510–566.Google Scholar
Robison, R. A. 1972. Mode of life of agnostid trilobites. 24th International Geological Congress, Montreal, Section 7:33–40.Google Scholar
Robison, R. A. 1976. Middle Cambrian trilobite biostratigraphy of the Great Basin. Brigham Young University Geology Studies, 23(2):93–109.Google Scholar
Robison, R. A. 1978. Origin, taxonomy, and homeomorphs of Doryagnostus (Cambrian Trilobita). University of Kansas Paleontological Contributions, Paper 91, 10 p.Google Scholar
Robison, R. A. 1982. Some Middle Cambrian agnostoid trilobites from western North America. Journal of Paleontology, 56:132–160.Google Scholar
Robison, R. A. 1984. Cambrian Agnostida of North America and Greenland, Pt. I, Ptychagnostidae. University of Kansas Paleontological Contributions, Paper, 109, 59 p.Google Scholar
Robison, R. A. 1988. Trilobites of the Holm Dal Formation (late Middle Cambrian), central North Greenland. Meddelelser om Gr⊘nland, Geoscience, 20:23–103.Google Scholar
Robison, R. A. 1991. Middle Cambrian biotic diversity: examples from four Utah lagerstätten, p. 77–98. In Simonetta, A. M. and Conway Morris, S. (eds.), The Early Evolution of Metazoa and the Significance of Problematic Taxa. Cambridge University Press, Cambridge.Google Scholar
Robison, R. A. 1994. Agnostoid trilobites from the Henson Gletscher and Kap Stanton formations (Middle Cambrian), North Greenland. Gr⊘nlands Geologiske Unders⊘gelse, Bulletin 169:25–77.Google Scholar
Robison, R. A. 1995. Revision of the Middle Cambrian trilobite Agnostus acadicus Hartt. Journal of Paleontology, 69:302–307.Google Scholar
Robison, R. A., and Palmer, A. R. 1968. Revision of Cambrian stratigraphy, Silver Island Mountains, Utah. American Association of Petroleum Geologists Bulletin, 52:167–171.Google Scholar
Robison, R. A., Rosova [Rozova], A. V., Rowell, A. J., and Fletcher, T. P. 1977. Cambrian boundaries and divisions. Lethaia, 10:257–262.Google Scholar
Romanenko, E. V. 1977. Cambrian trilobites from sections on the River Bolshaya Ishe (north-east Altay), p. 161–184. In Zhuravleva, I. T. and Rozova, A. V. (eds.), Biostratigraphy and Fauna of the Upper Cambrian and its Boundary Layers (New Data from the Asiatic Regions of the USSR). Academy of Sciences of the U.S.S.R., Siberian Branch, Institute of Geology and Geophysics, Transactions 313. (In Russian) Google Scholar
Romanenko, E. V. 1985. Trilobites from the Middle-Upper Cambrian boundary beds of Altay. Paleontological Journal, 1985(4):54–63. (In Russian; also English edition, 1985(4):64–74) Google Scholar
Romanenko, E. V., and Romanenko, M. F. 1967. Some aspects of the Cambrian paleogeography and trilobites of the Gorny Altay. Information of the Altay Section of the Geographical Society of the USSR, 8:62–96. (In Russian)Google Scholar
Rowell, A. J., Robison, R. A., and Strickland, D. K. 1982. Aspects of Cambrian agnostoid phylogeny and chronocorrelation. Journal of Paleontology, 56:161–182.Google Scholar
Rozova [Rosova], A. V. 1960. Upper Cambrian trilobites of Salair. Academy of Sciences of the U.S.S.R., Siberian Branch, Institute of Geology and Geophysics, Transactions 5, 116 p. (In Russian) Google Scholar
Rozova [Rosova], A. V. 1964. Biostratigraphy and descriptions of Middle and Upper Cambrian trilobites of the northwest Siberian platform. Academy of Sciences of the USSR, Siberian Branch, Transactions of the Institute of Geology and Geophysics, 148 p. (In Russian) Google Scholar
Rozova [Rosova], A. V. 1968. Biostratigraphy and trilobites of the Upper Cambrian and Lower Ordovician of the northwestern Siberian platform. Academy of Sciences of the USSR, Siberian Branch, Institute of Geology and Geophysics, Transactions 36, 196 p. (In Russian) Google Scholar
Rozova [Rosova], A. V. 1977. Upper Cambrian and Lower Ordovician trilobites of the Rubnoi, Khantaiki, Kureiki and Letnei river basins, p. 54–84. In Zhuravleva, I. T. and Rozova, A. V. (eds.), Biostratigraphy and Fauna of the Upper Cambrian and its Boundary Layers (New Data from the Asiatic regions of the USSR). Academy of Sciences of the U.S.S.R., Siberian Branch, Institute of Geology and Geophysics, Transactions 313. (In Russian) Google Scholar
Rudolph, F. 1993. Bestimmungshilfen für Geschiebesammler; Trilobiten, 19, Glyptagnostus reticulatus (Angelin, 1851). Geschiebekunde aktuell (Hamburg) 9(2): 51–52.Google Scholar
Rudolph, F. 1994. Die Trilobiten der mittelkambrischen Geschiebe; Systematik, Morphologie und Ökologie. Verlag Frank Rudolph, Wankendorf, 308 p.Google Scholar
Rudolph, F. 1997. Geschiebefossilien, Teil 1: Paläzoikum. Fossilien, Zeitschrift für Sammler und Hobbypaläontollogen, 12:1–64.Google Scholar
Rusconi, C. 1948. Apuntes sobre el Triásico y el Ordovícico de El Challao, Mendoza. Revista del Museo de Historia Natural de Mendoza, 2:165–198.Google Scholar
Rusconi, C. 1950. Trilobitas y otros organismos del Cámbrico de Canota. Revista del Museo de Historia Natural de Mendoza, 4:71–84.Google Scholar
Rusconi, C. 1951. Mas trilobitas cámbricos de San Isidro, Cerro Pelado y Canota. Revista del Museo de Historia Natural de Mendoza, 5:3–30.Google Scholar
Rusconi, C. 1952. Varias especies de trilobitas del Cámbrico de Canota. Revista del Museo de Historia Natural de Mendoza, 6:5–17.Google Scholar
Rusconi, C. 1953. Nuevos trilobites cámbricos de la Quebrada de la Cruz. Boletín Paleontológico de Buenos Aires, 27, 8 p.Google Scholar
Rusconi, C. 1954. Trilobitas cámbricos de la Quebradita Oblicua, Sud del Cerro Aspero. Revista del Museo de Historia Natural de Mendoza, 7:3–59.Google Scholar
Rusconi, C. 1955a. Mas fósiles cámbricos y ordovícicos de San Isidro, Mendoza. Boletín Paleontológico de Buenos Aires, 31, 4 p.Google Scholar
Rusconi, C. 1955b. Fósiles cámbricos y ordovícios al Oeste de San Isidro, Mendoza. Revista del Museo de Historia Natural de Mendoza, 8:3–64.Google Scholar
Rushton, A. W. A. 1978. Fossils from the Middle-Upper Cambrian transition in the Nuneaton district. Palaeontology, 21:245–283.Google Scholar
Rushton, A. W. A. 1979. A review of the Middle Cambrian Agnostida from the Abbey Shales, England. Alcheringa, 3:43–61.CrossRefGoogle Scholar
Rushton, A. W. A. 1983. Trilobites from the Upper Cambrian Olenus Zone in central England, p. 107–139. In Briggs, D. E. G. and Lane, P. D. (eds.), Trilobites and Other Early Arthropods. Palaeontological Association, Special Papers in Palaeontology, 30.Google Scholar
Salter, J. W. 1864. A Monograph of British Trilobites, Pt. 1. Palaeontographical Society, London, Monograph, vol. for 1862, p. 1–80.Google Scholar
Samson, S., Palmer, A. R., Robison, R. A., and Secor, D. T. 1990. Biogeographical significance of Cambrian trilobites from the Carolina slate belt. Geological Society of America, Bulletin, 102:1459–1470.Google Scholar
Schrank, E. 1975. Kambrische Trilobiten der China-Kollektion v. Richthofen, Teil 2; Die Fauna mit Kaolishania? quadriceps von Sai-maki. Zeitschrift für Geologische Wissenschaften, 3:591–619.Google Scholar
Schwimmer, D. R. 1989. Taxonomy and biostratigraphic significance of some Middle Cambrian trilobites from the Conasauga Formation in western Georgia. Journal of Paleontology, 63:484–494.CrossRefGoogle Scholar
Shaw, A. B. 1952. The paleontology of northwestern Vermont, II; fauna of the Upper Cambrian Rockledge Conglomerate near St. Albans. Journal of Paleontology, 26:458–483.Google Scholar
Shergold, J. H. 1975. Late Cambrian and Early Ordovician trilobites from the Burke River Structural Belt, western Queensland, Australia. Bureau of Mineral Resources, Geology and Geophysics, Bulletin 153; Volume 1, 251 p.; volume 2, 58 plates.Google Scholar
Shergold, J. H. 1977. Classification of the trilobite Pseudagnostus . Palaeontology, 20:69–100.Google Scholar
Shergold, J. H. 1980. Late Cambrian trilobites from the Chatsworth Limestone, western Queensland. Bureau of Mineral Resources, Geology and Geophysics, Bulletin 186, 111 p.Google Scholar
Shergold, J. H. 1982. Idamean (Late Cambrian) trilobites, Burke River structural belt, western Queensland. Bureau of Mineral Resources, Geology and Geophysics, Bulletin 187, 69 p.Google Scholar
Shergold, J. H., and Cooper, R. A. 1985. Late Cambrian trilobites from the Mariner Group, northern Victoria Land, Antarctica. BMR Journal of Australian Geology & Geophysics, 9:91–106.Google Scholar
Shergold, J. H., and Laurie, J. R. 1991. Ptychagnostus Jaekel, 1909 and Glyptagnostus Whitehouse, 1936 (Trilobita): proposed conservation of accepted usage. Bulletin of Zoological Nomenclature, 48(3):200–202.CrossRefGoogle Scholar
Shergold, J. H., and Laurie, J. R. 1997. Introduction to the suborder Agnostina, p. 331–383. In Kaesler, R. L. (ed.), Treatise on Invertebrate Paleontology, Pt. O, Trilobita (Revised). Geological Society of America and University of Kansas, Boulder, Colorado, and Lawrence, Kansas.Google Scholar
Shergold, J. H., and Webers, G. F. 1992. Late Dresbachian (Idamean) and other trilobite faunas from the Heritage Range, Ellsworth Mountains, West Antarctica, p. 125–168. In Webers, G. F., Craddock, C., and Splettstoesser, J. F. (eds.), Geology and Paleontology of the Ellsworth Mountains, West Antarctica. Geological Society of America, Memoir 170.Google Scholar
Shergold, J. H., Bordonaro, O., and Liñán, E. 1995. Late Cambrian agnostoid trilobites from Argentina. Palaeontology, 38:241–257.Google Scholar
Shergold, J. H., Laurie, J. R., and Sun, X.-W. 1990. Classification and review of the trilobite order Agnostida Salter, 1864; an Australian perspective. Bureau of Mineral Resources, Geology and Geophysics, Report, 296, 93 p.Google Scholar
Shimer, H. W., and Shrock, R. R. 1944. Index Fossils of North America. Technology Press, Massachusetts Institute of Technology, 837 p.Google Scholar
Smith, A. B. 1994. Systematics and the Fossil Record: Documenting Evolutionary Patterns. Blackwell Scientific Publications, Oxford, 223 p.Google Scholar
$Snnajdr, M. 1958. Trilobiti $cneského stredního kambria. Rozpravy Ústr$end-ního Ústavu geologického, 24, 280 p.Google Scholar
Soloviev, I. A., Poplov, L. E., and Samsonov, V. V. 1984. New data on the Upper Cambrian fauna of the Ellsworth and Pensacola mountains (West Antarctica). The Antarctic, Academy of Sciences of the U.S.S.R., Soviet Committee of Antarctic Research, 23:46–71. (In Russian).Google Scholar
Song, Y.-P. 1989. Upper Middle Cambrian trilobite biostratigraphy of western Hunan, China. Unpublished Master of Science thesis, University of Kansas, Lawrence, 75 p.Google Scholar
Stitt, J. H. 1971. Late Cambrian and earliest Ordovician trilobites, Timbered Hills and lower Arbuckle groups, western Arbuckle Mountains, Murray County, Oklahoma. Oklahoma Geological Survey, Bulletin 110:1–83.Google Scholar
Stitt, J. H., and Straatmann, W. M. 1997. Trilobites from the upper part of the Deadwood Formation (upper Franconian and Trempealeauan stages, Upper Cambrian), Black Hills, South Dakota. Journal of Paleontology, 71:86–102.Google Scholar
Strand, T. 1929. The Cambrian beds of the Mj⊘sen district in Norway. Norsk Geologisk Tidsskrift, 10:308–365.Google Scholar
Sun, X.-W. 1989. Cambrian agnostids from the North China platform. Palaeontologia Cathayana, 4:53–129.Google Scholar
Sundberg, F. A., and McCollum, L. B. 1997. Oryctocephalids (Corynexochida: Trilobita) of the Lower–Middle Cambrian boundary interval from California and Nevada. Journal of Paleontology, 71:1065–1090.Google Scholar
Taylor, K., and Rushton, A. W. A. 1972 (dated 1971). The pre-Westphalian geology of the Warwickshire coalfield. Bulletin of the Geological Survey of Great Britain, 35:1–150.Google Scholar
Tortello, M. F., and Bordonaro, O. L. 1997. Cambrian agnostoid trilobites from Mendoza, Argentina: a systematic revision and biostratigraphic implications. Journal of Paleontology, 71:74–86.Google Scholar
Troedsson, G. T. 1937. On the Cambro-Ordovician faunas of western Quruq tagh, eastern T'ien-shan. Palaeontologica Sinica (New Series B, Number 2), 106:1–74.Google Scholar
Tullberg, S. A. 1880. Om Agnostus-arterna i de Kambriska aflagrin-garne vid Andrarum. Sveriges Geologiska Undersökning, Series C, 42:1–37.Google Scholar
Vogdes, A. W. 1892. On the North American species of the genus Agnostus . American Geologist, 9:377–396.Google Scholar
Wahlenberg, G. 1818. Petrificata telluris Svecanae. Nova Acta Regiae Societatis Scientiatum Upsaliensis, 8, 116 p.Google Scholar
Walcott, C. D. 1884a. On the Cambrian faunas of North America; preliminary studies. U.S. Geological Survey, Bulletin 10:1–73.Google Scholar
Walcott, C. D. 1884b. Paleontology of the Eureka district, Nevada. U.S. Geological Survey, Monograph 8, 298 p.Google Scholar
Walcott, C. D. 1905. Cambrian faunas of China. Proceedings of the U.S. National Museum, 29:1–106.Google Scholar
Walcott, C. D. 1913. The Cambrian faunas of China, p. 3–276. In Research in China, Volume 3, Carnegie Institution of Washington, Publication 54.Google Scholar
Wallerius, I. D. 1895. Undersökningar öfver zonen med Agnostus laevigatus i Vestergötland, jämte en inledande öfversikt af Vestergötlands samtliga Paradoxideslager. Gleerupska Universitets-Bokhan-deln, Lund, 72 p.Google Scholar
Wallerius, I. D. 1930. Från Västergötands mellankambrium. Geologiska Föreningens i Stockholm Förhandlingar, 52:47–62.Google Scholar
Walossek, D., and Müler, K. J. 1990. Upper Cambrian stem-lineage crustaceans and their bearing upon the monophyletic origin of Crustacea and the position of Agnostus . Lethaia, 23:409–427.Google Scholar
Westergård, A. H. 1922. Sveriges Olenidskiffer. Sveriges Geologiska Undersökning, Series Ca, 18, 205 p.Google Scholar
Westergård, A. H. 1931. Den kambro-siluriska lagerserien, p. 29–67. In Lundqvist, G., Högbom, A., and Westergård, A. H., Beskrivning till kartbladet Lugnås. Sveriges Geologiska Undersökning, Series Aa, 172.Google Scholar
Westergård, A. H. 1936. Paradoxides oelandicus beds of Öland. Sveriges Geologiska Undersökning, Series C, 394, 66 p.Google Scholar
Westergård, A. H. 1946. Agnostidea of the Middle Cambrian of Sweden. Sveriges Geologiska Undersökning, Series C, 477, 141 p.Google Scholar
Westergård, A. H. 1947. Supplementary notes on the Upper Cambrian trilobites of Sweden. Sveriges Geologiska Undersökning, Series C, 489, 35 p.Google Scholar
Westrop, S. R. 1986. Trilobites of the Upper Cambrian Sunwaptan Stage, southern Canadian Rocky Mountains, Alberta. Palaeontographica Canadiana, 3, 179 p.Google Scholar
Westrop, S. R. 1995. Sunwaptan and Ibexian (Upper Cambrian-Lower Ordovician) trilobites of the Rabbitkettle Formation, Mountain River region, northern Mackenzie Mountains, northwest Canada. Palaeontographica Canadiana, 12, 75 p.Google Scholar
Westrop, S. R., Ludvigsen, R., and Kindle, C. H. 1996. Marjuman (Cambrian) agnostoid trilobites of the Cow Head Group, western Newfoundland. Journal of Paleontology, 70:804–829.Google Scholar
White, C. A. 1874. Preliminary report upon invertebrate fossils, with descriptions of new species. United States Geological Exploration West of the 100th Meridian (Wheeler Survey), Pamphlet, 27 p.Google Scholar
Whitehouse, F. W. 1936. The Cambrian faunas of northeastern Australia, Pt. 1, stratigraphic outline, Pt. 2, Trilobita (Miomera). Memoirs of the Queensland Museum, 11:59–112.Google Scholar
Whitehouse, F. W. 1939. The Cambrian faunas of northeastern Australia, Pt. 3, the polymerid trilobites. Memoirs of the Queensland Museum, 40:179–282.Google Scholar
Whittington, H. B. 1986. Late Middle Cambrian trilobites from Zanskar, Ladakh, northern India. Rivista Italiana di Paleontologia e Stratigrafia, 92:171–188.Google Scholar
Whittington, H. B. 1997. Morphology of the exoskeleton, p. 1–85. In Kaesler, R. L. (ed.), Treatise on Invertebrate Paleontology, Pt. O, Arthropoda 1; Trilobita (Revised), Volume 1. Geological Society of America and University of Kansas, Boulder, Colorado, and Lawrence, Kansas.Google Scholar
Whittington, H. B., and Kelly, S. R. A. 1997. Morphological terms applied to Trilobita, p. 313–329. In Kaesler, R. L. (ed.), Treatise on Invertebrate Paleontology, Pt. O, Arthropoda 1; Trilobita (Revised), Volume 1. Geological Society of America and University of Kansas, Boulder, Colorado, and Lawrence, Kansas.Google Scholar
Wolfart, R. 1974. Die Fauna (Brachiopoda, Mollusca, Trilobita) das älteren Ober-Kambriums (Ober-Kushanian) von Dorah Shah Dad, Südost-Iran, und Surkh Bum, Zentral-Afghanistan. Geologisches Jahrbuch, 8:71–184.Google Scholar
Wolfart, R. 1994. Middle Cambrian faunas, North Victoria Land, Antarctica. Geologisches Jahrbuch, Reihe B, 84, 161 p.Google Scholar
Woodward, H. 1905. On a collection of trilobites from the Upper Cambrian of Shantung, North China. Geological Magazine, new series, 2:251–255.Google Scholar
Xiang, L.-W. 1981. Trilobita, p. 170–175. In Xiang, L.-W., Nan, R.-S., Guo, Z.-M., Li, S.-J., Yang, J.-L., Zhou, G.-Q., Sheng, X.-F., Qian, Y., An, T.-X., Yuan, K.-X., and Zhang, S.-G., The Cambrian System of China, Stratigraphy of China, 4. Geological Publishing House, Beijing. (In Chinese) Google Scholar
Xiang, L.-W., and Zhang, T.-R. 1985. Systematic descriptions of trilobite fossils, p. 64–136. In Ziguo, Wang (ed.), Stratigraphy and Trilobite Faunas of the Cambrian in the Western Part of Northern Tianshan, Xinjiang. Ministry of Geology and Mineral Resources, Geological Memoirs, Series 2, Number 4, Beijing. (In Chinese with English summary) Google Scholar
Yang, J.-L. 1978. Middle and Upper Cambrian trilobites of western Hunan and eastern Guizhou. Professional Papers of Stratigraphy and Palaeontology, 4:1–82. (In Chinese) Google Scholar
Yang, J.-L. 1982. Notes on the Middle Cambrian trilobite faunas from Duibian of Jiangshan, Zhejiang. Geological Review, 28(4):299–307. (In Chinese with English abstract) Google Scholar
Yang, J.-L. 1992. Evolution of the family Damesellidae (Trilobita) and boundary between the Middle and Upper Cambrian. Earth Science, Journal of China University of Geosciences, 17(3):251–260. (In Chinese with English abstract) Google Scholar
Yang, J.-L., Yu, S.-Y., Liu, G.-T., Su, N.-M., He, M.-H., Shang, J.-G, Zhang, H.-Q., Zhu, H.-Y., Li, Y.-J., and Yan, G.-S. 1991. Cambrian stratigraphy, lithofacies, palaeogeography and trilobite faunas of East Qinling-Dabashan mountains. China University of Geosciences Press, Wuhan, 192 p. (Chinese edition) Google Scholar
Yang, J.-L., Yu, S.-Y., Liu, G.-T., Su, N.-M., He, M.-H., Shang, J.-G, Zhang, H.-Q., Zhu, H.-Y., Li, Y.-J., and Yan, G.-S. 1993. Cambrian stratigraphy, lithofacies, palaeogeography and trilobite faunas of East Qinling-Dabashan mountains. China University of Geosciences Press, Wuhan, 246 p. (English edition) Google Scholar
Yegorova, L. I. [see Egorova, L. I.]Google Scholar
Yin, G.-Z., and Li, S.-J. 1978. Class Trilobita, p. 385–595. In Palaeontological Atlas of Southwest China; Guizhou Province, Pt. 1. Geological Publishing House, Beijing. (In Chinese) Google Scholar
Young, G. A., and Ludvigsen, R. 1989. Mid-Cambrian trilobites from the lowest part of the Cow Head Group, western Newfoundland. Geological Survey of Canada, Bulletin, 392:1–49.Google Scholar
Yuan, J.-L., Zhao, Y.-L., Wang, Z.-Z., Zhou, Z., and Chen, X.-Y. 1997. A preliminary study on Lower-Middle Cambrian boundary and trilobite fauna at Balang, Taijiang, Guizhou, South China. Acta Palaeontologica Sinica, 36(4):494–524. (In Chinese with English summary) Google Scholar
Yue, W.-Z., Wei, N., Jiao, S.-D., and Jiang, Y.-H. 1990. Sedimentary characteristics and facies model of shelf-to-slope environments in the Cambrian-Ordovician of the lower Yangtze area. Nanjing Institute of Geological Mines and Resources, Research Report, 83 p. (In Chinese) Google Scholar
Zhang, J.-L., and Wang, S.-X. 1985. Trilobita, p. 327–487. In Tianjin Institute of Geology and Mineral Resources, Palaeontological Atlas of North China, Volume 1, Paleozoic. Geological Publishing House, Beijing. (In Chinese) Google Scholar
Zhang, T.-R. 1981. Trilobita, 134–213. In Palaeontological Atlas of Northwest China, Xinjiang Province, Volume 1. Geological Publishing House, Beijing. (In Chinese) Google Scholar
Zhang [Chang], W.-T., and Jell, P. A. 1987. Cambrian Trilobites of North China; Chinese Cambrian Trilobites Housed in the Smithsonian Institution. Science Press, Beijing, 459 p.Google Scholar
Zhang [Chang], W.-T., Xiang, L.-W., Liu, Y.-H., and Meng, X.-S. 1995. Cambrian stratigraphy and trilobites from Henan. Palaeontologia Cathayana, 6:1–166.Google Scholar
Zhou, T.-M., Liu, Y.-R., Meng, X.-S., and Sun, Z.-H. 1977. Class Trilobita, p. 104–266. In Hubei Institute of Geological Science, Geological Bureau of Henan, Geological Bureau of Hubei, Geological Bureau of Hunan, Geological Bureau of Guangdong, and Geological Bureau of Guangxi, Palaeontological Atlas of Central and Southern China, Pt. 1, Early Palaeozoic. Geological Publishing House, Beijing. (In Chinese) Google Scholar
Zhou, Z.-Q., Li, J.-S., and Qu, X.-G. 1982. Class Trilobita, p. 215–294. In Palaeontological Atlas of Northwest China; Shaanxi-Gansu-Ningxia Volume, Pt. 1. Geological Publishing House, Beijing. (In Chinese) Google Scholar
Zhou, Z.-Q., Li, J.-S., Cao, X.-D., Hu, Y.-X., and Zhao, J.-T. 1996. Early Palaeozoic stratigraphy and sedimentary-tectonic evolution in eastern Qilian Mountains, China. Northwest Geoscience, 7(1):1–50. (In Chinese with English abstract) Google Scholar
Zhou, Z.-Y, McNamara, K. J., Yuan, W.-W., and Zhang, T.-R. 1994. Cyclopygid trilobites from the Ordovician of northeastern Tarim, Xinjiang, northwest China. Records of the Western Australian Museum, 16(4):593–622.Google Scholar
Zhu, Z.-L. [Chu, C.-L.], Lin, H.-L., and Zhang, T.-H. 1979. Trilobita, p. 81–116. In Nanjing Institute of Geology and Palaeontology, Academia Sinica and Qinghai Institute of Geological Sciences, Palaeontological Atlas of Northwestern China; Qinghai Fascicle, Volume 2. Geological Publishing House, Beijing. (In Chinese) Google Scholar
Zhu, Z.-L. [Chu, C.-L.], and Wittke, H. W. 1989. Upper Cambrian trilobites from Tangshan, Hebei Province, North China. Palaeontologia Cathayana, 4:199–259.Google Scholar