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Neltneriidae and Holmiidae (Trilobita) from Morocco and the problem of Early Cambrian intercontinental correlation

Published online by Cambridge University Press:  20 May 2016

Gerd Geyer  and
Allison R. Palmer
Gerd Geyer
Affiliation:
Institut für Paläontologie, Pleicherwall 1, 97070 Würzburg, Germany
Allison R. Palmer
Affiliation:
Institute for Cambrian Studies, 445 North Cedarbrook Road, Boulder, Colorado 80304-0417
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Abstract

Previously undescribed Holmiidae from the Sectigena Zone of Morocco indicate correlation of this zone with other zones bearing Holmiidae on Baltica, Avalonia, Siberia, and Laurentia. The occurrence of the youngest Antatlasiinae in the Sectigena Zone and the oldest Protoleninae in the overlying Hupeolenus Zone suggests correlations of the Sectigena Zone with upper Atdabanian beds bearing the youngest Antatlasiinae and the Hupeolenus Zone with Botomian beds bearing the oldest Protoleninae in Siberia. The occurrence, in the overlying Hupeolenus and Cephalopyge Zones, of Paradoxides s.l. in association with the olenelloid Cambropallas and with trilobites characteristic of the Lower Cambrian “Protolenus” Zone of Avalonia calls into question the major criteria for recognition of strata of Early and Middle Cambrian age. New taxa include lyouella contracta n. gen. and sp. of the Holmiidae and Bondonella sdzuyi n. sp. of the Neltneriidae. The known species of Neltneria, N. jacqueti and N. termieri, are revised.

Type
Research Article
Information
Journal of Paleontology , Volume 69 , Issue 3 , May 1995 , pp. 459 - 474
Copyright
Copyright © The Paleontological Society 

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References

Ahlberg, P., Bergström, J., and Johansson, J. 1986. Lower Cambrian olenellid trilobites from the Baltic Faunal Province. Geologiska Föreningens i Stockholm Förhandlingar, 108(1):39–56.CrossRefGoogle Scholar
Alvaro, J., Gozalo, R., and Liñan, E. 1993. Bioestratigrafia del limite Cámbrico inferior-medio en Ateca (cadena Ibérica occidental, España). Revista Española de Paleontología, Número extraordinario:40–48.Google Scholar
Astashkin, V. A., Pegel', T. V., Repina, L. N., Rozanov, A. Yu., Shabanov, Yu. Ya., Zhuravlev, A. Yu., 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
Bengtson, S., and Fletcher, T. P. 1983. The oldest sequence of skeletal fossils in the Lower Cambrian of southeast Newfoundland. Canadian Journal of Earth Sciences, 20:525–536.Google Scholar
Bergström, J. 1973. Classification of olenellid trilobites and some Balto-Scandian species. Norsk Geologisk Tidsskrift, 53:283–314.Google Scholar
Bergström, J. 1981. Lower Cambrian shelly faunas and biostratigraphy in Scandinavia, p. 22–25. In Taylor, M. E. (ed.), Short papers for the Second International Symposium on the Cambrian System 1981. U.S. Geological Survey, Open-File Report 81–743.Google Scholar
Boudda, A., Choubert, G., and Faure-Muret, A. 1979. Essai de stratigraphie de la couverture sédimentaire de l'Anti-Atlas: Adoudounien-Cambrien Inférieur. Notes et Mémoirs de la Service géologique du Maroc, 271, 96 p.Google Scholar
Brögger, W. C. 1886. Om alderen af Olenelluszonen i Nordamerika. Geologiska Föreningens i Stockholm Förhandlingar, 101, VIII:182–213.Google Scholar
Cobbold, E. S. 1921. The Cambrian Horizons of Comley (Shropshire) and their Brachiopoda, Pteropoda, Gastropoda, etc. Geological Society of London, Quarterly Journal, 71:325–386.Google Scholar
Geyer, G. 1988a. Agnostida aus dem höheren Unterkambrium und dem Mittelkambrium von Marokko. Teil 1: Agnostina. Neues Jahrbuch für Geologie und Paläontologie, Monatshefte, 1988:141–152.Google Scholar
Geyer, G. 1988b. Agnostida aus dem höheren Unterkambrium und dem Mittelkambrium von Marokko. Teil 2: Eodiscina. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 177:93–133.Google Scholar
Geyer, G. 1989. “Supercycles” and complex cyclicity in the Late Precambrian and Cambrian of Morocco. 28th International Geological Congress, Washington 1989, Abstracts, 3:470.Google Scholar
Geyer, G. 1990a. Revised Lower to lower Middle Cambrian biostratigraphy of Morocco. Newsletters on Stratigraphy, 22:53–70.Google Scholar
Geyer, G. 1990b. Die marokkanischen Ellipsocephalidae (Trilobita: Redlichiida). Beringeria, 3, 363 p.Google Scholar
Geyer, G. 1990c. Correlation along the Lower/Middle Cambrian boundary—a puzzling story with an elusory end?, p. 100–102. In Repina, L. N. and Zhuravlev, A. Yu. (eds.), Third International Symposium on the Cambrian System. 1–9 August 1990, Novosibirsk, USSR, Abstracts.Google Scholar
Geyer, G. 1993. The giant Cambrian trilobites of Morocco. Beringeria, 8:71–107.Google Scholar
Harrington, H. J., Henningsmoen, G., Howell, B. F., Jaanusson, V., Lochman-Balk, C., et al. 1959. Arthropoda 1. In Moore, R. C. (ed.), Treatise on Invertebrate Paleontology, Part O. Geological Society of America and University of Kansas Press, Lawrence, 560 p.Google Scholar
Hupé, P. 1952. Sur les zones de trilobites du Cambrien inférieur marocain. Comptes Rendus de l'Académie des Sciences, Paris, 235:480–481.Google Scholar
Hupé, P. 1953 [“1952”]. Contribution à l'étude du Cambrien inférieur et du Précambrien III de l'Anti-Atlas marocain. Notes et Mémoirs de la Service géologique du Maroc, 103, 402 p.Google Scholar
Hupé, P. 1959. Nouvelle contribution à l'étude du Cambrien marocain. Thèse Scientifique de la Faculté des Sciences de l'Université de Paris, 447 p. [unpubl.].Google Scholar
Hupé, P. 1960a. Sur le Cambrien inférieur du Maroc. Reports of the XXIth International Geological Congress, Norden 1960, 8(8), Late Pre-Cambrian and Cambrian stratigraphy:75–85.Google Scholar
Hupé, P. 1960b. Réflexions sur quelques traits de la structure céphalique chez les larves de Trilobites. Bulletin de la Societé géologique de France, series VII, I (for 1959):745–758.Google Scholar
Kiaer, J. 1917. The Lower Cambrian Holmia Fauna at Tømten in Norway. Videnskapsselskapets Skrifter, I. Matematisk-naturviden-skapelig Klasse, 1916, 10, 140 p.Google Scholar
Lake, P. 1937. A monograph of the British Cambrian trilobites. Part X. Palaeontographical Society, London, 225–248.Google Scholar
Levi-Setti, R. 1993. Trilobites. University of Chicago Press, Chicago, 342 p.Google Scholar
Linnarsson, J. G. O. 1873. Om några försteningar från Sveriges och Norges “Primordialzon.” Ofversigt af Konglika Svenska Vetenskaps-Akademiens Förhandlingar for 1871, 6:789–796.Google Scholar
Matthew, G. F. 1890. On Cambrian organisms in Acadia. Royal Society of Canada Proceedings and Transactions, Section 4, 7:135–162.Google Scholar
Moczydlowska, M., and Vidal, G. 1988. How old is the Tommotian? Geology, 16:166–168.Google Scholar
Neltner, L., and Poctey, N. 1950 [“1949”]. Quelques faunes géorgiennes du Maroc. Notes et Mémoirs de la Service géologique du Maroc, 2, no. 74:53–83.Google Scholar
Orlowski, S. 1985. Lower Cambrian and its trilobites in the Holy Cross Mts. Acta geologica Polonica, 35:231–250.Google Scholar
Palmer, A. R., and James, N. P. 1980. The Hawke Bay event: a circum-Iapetus regression near the Lower Middle Cambrian boundary, p. 15–18. In Wones, D. R. (ed.), The Caledonides in the USA. Proceedings, 1979 Meeting, Blacksburg, Virginia.Google Scholar
Palmer, A. R., and Repina, L. N. 1993. Through a glass darkly: taxonomy, phylogeny and biostratigraphy of the Olenellina. University of Kansas Paleontological Contributions, New Series, 3, 35 p.Google Scholar
Repina, L. N. 1986. Global correlation of stage subdivisions of the Lower Cambrian according to trilobites, p. 4–25. In Zhuravleva, I. T. (ed.), Biostratigraphy and paleontology of the Cambrian of central Asia. Akademiya Nauk SSSR, Sibirskoe Otdelenie, Institut Geologi i Geofiziki, Trudy, 669. [in Russian.] Google Scholar
Resser, C. E., and Howell, B. F. 1938. Lower Cambrian Olenellus Zone of the Appalachians. Geological Society of America Bulletin, 49:195–248.Google Scholar
Rushton, A. W. A. 1966. The Cambrian trilobites from the Purley Shales of Warwickshire. Palaeontographical Society of London, Monographs, 120, no. 511, 55 p.Google Scholar
Sdzuy, K. 1961. Das Kambrium Spaniens. Teil II: Trilobiten. 1. Abschnitt. Akademie der Wissenschaften und der Literatur Mainz, Abhandlungen der mathematisch-naturwissenschaftlichen Klasse, 1961:217–312 [499–594].Google Scholar
Sdzuy, K. 1962. Trilobiten aus dem Unter-Kambrium der Sierra Morena (S-Spanien). Senckenbergiana lethaea, 43:181–229.Google Scholar
Sdzuy, K. 1978. The Precambrian-Cambrian boundary beds in Morocco (preliminary report). Geological Magazine, 115:83–94.Google Scholar
Termier, G., and Termier, H. 1950 [“1949”]. Paléontologie marocaine. Tome 2. Invertébrés de l'Ére primaire. Fasc. 4: Annélides, Arthropodes, Echinodermes, Conularides et Graptolithes. Notes et Mémoire de la Service géologique du Maroc, 79, 282 p.Google Scholar
Walcott, C. D. 1891. The fauna of the Lower Cambrian or Olenellus Zone. Tenth Annual Report of the U.S. Geological Survey, Part 1:509–774.Google Scholar
Whittington, H. B., and Kelly, S. R. A. In press. Morphological terms applied to Trilobita. In Whittington, H. B. (ed.), Treatise on Invertebrate Paleontology, Pt. O. Geological Society of America and University of Kansas Press, Lawrence.Google Scholar
Yegorova, L. I., and Savitskiy, V. E. 1969. Stratigraphy and biofacies of the Cambrian of the Siberian Platform (western Pre-Anabar). Sibirskogo Nauchno-issledovatel'skogo Instituta Geologii, Geofiziki i Mineral'nogo Syr'ya, Seriya Paleontologiya i Stratigrafiya, 43:407 p. [in Russian.] Google Scholar