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Ontogeny of the proetoid trilobite Stenoblepharum, and relationships of a new species from the Upper Ordovician of Argentina

Published online by Cambridge University Press:  14 July 2015

Gregory D. Edgecombe ,
Brian D. E. Chatterton ,
Norberto E. Vaccari  and
Beatriz G. Waisfeld
Gregory D. Edgecombe
Affiliation:
1Australian Museum, 6 College Street, Sydney South, NSW 2000, Australia
Brian D. E. Chatterton
Affiliation:
2Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta T6G 2E3, Canada
Norberto E. Vaccari
Affiliation:
3CONICET, Cátedra de Estratigrafía y Geología Histórica, Universidad Nacional de Córdoba, Avenida Vélez Sársfield 299, C.C. 395, 5000 Córdoba, Argentina
Beatriz G. Waisfeld
Affiliation:
3CONICET, Cátedra de Estratigrafía y Geología Histórica, Universidad Nacional de Córdoba, Avenida Vélez Sársfield 299, C.C. 395, 5000 Córdoba, Argentina
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Abstract

Silicified material from the Early Caradoc part of the Las Aguaditas Formation in San Juan Province, Argentina, includes a nearly complete growth series for a new species of the tropidocoryphid Stenoblepharum Owens, 1973. Cladistic analysis of Stenoblepharum species indicates that S. astinii new species is most closely allied to the Early Caradoc S. strasburgense (Cooper, 1953) from Virginia. Chinese species of Stenoblepharum are sister group to a Baltic/Laurentian clade. A single adult-like protaspid stage occurs in the life cycle of S. astinii, closely resembling the protaspis of Decoroproetus. It is preceded by a non-adult-like first protaspid instar that appears to be characteristic of Proetoidea in general but contrasts markedly with the early larval stages of other taxa in Proetida.

Type
Research Article
Information
Journal of Paleontology , Volume 71 , Issue 3 , May 1997 , pp. 419 - 433
Copyright
Copyright © The Paleontological Society 

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References

Adrain, J. M., and Chatterton, B. D. E. 1995a. The otarionine trilobites Harpidella and Maurotarion, with species from northwestern Canada, the United States, and Australia. Journal of Paleontology, 69:307–326.CrossRefGoogle Scholar
Adrain, J. M., and Chatterton, B. D. E. 1995b. Aulacopleurine trilobites from the Llandovery of northwestern Canada. Journal of Paleontology, 69:326–340.CrossRefGoogle Scholar
Astini, R. A. 1995. Sedimentología de la Formación Las Aguaditas (talud carbonático) y evolución de la cuenca precordillerana durante el ordovícico medio. Revista de la Asociación Geológica Argentina, 30:143–164.Google Scholar
Beecher, C. 1893. A larval form of Triarthrus. American Journal of Science, 36:361–362.Google Scholar
Beecher, C. 1895. The larval stages of trilobites. American Geologist, 16:166–197.Google Scholar
Bergström, J. 1977. Proetida—a disorderly Order of trilobites. Lethaia, 10:95–105.CrossRefGoogle Scholar
Briggs, D. E. G., and Edgecombe, G. D. 1993. Beecher's Trilobite Bed. Geology Today, 9:97–102.CrossRefGoogle Scholar
Brussa, E. D. 1994. Los graptofaunas ordovícicas del sector central de la Precordillera Occidental sanjuanina. Doctoral thesis, Universidad Nacional de Córdoba, 323 p.Google Scholar
Brussa, E. D.In press. Taxonomia y bioestratigrafía de las graptofaunas ordovícicas de la Formación Las Aguaditas, Precordillera de San Juan. Parte I: Familias Thamnograptidae, Abrograptidae y Glossograptidae. Boletin de la Academia Nacional de Ciencias, Córdoba, 62.Google Scholar
Chatterton, B. D. E. 1971. Taxonomy and ontogeny of Siluro-Devonian trilobites from near Yass, New South Wales. Palaeontographica A, 137, 108 p.Google Scholar
Chatterton, B. D. E. 1980. Ontogenetic studies of Middle Ordovician trilobites from the Esbataottine Formation, Mackenzie Mountains, Canada. Palaeontographica A, 171, 74 p.Google Scholar
Chatterton, B. D. E. 1994. Ordovician proetide trilobite Dimeropyge, with a new species from northwestern Canada. Journal of Paleontology, 68:541–556.CrossRefGoogle Scholar
Chatterton, B. D. E., Edgecombe, G. D., Vaccari, N. E., and Waisfeld, B. G. 1997. Ontogeny and relationships of the Ordovician odontopleurid trilobite Ceratocara, with new species from Argentina and New York. Journal of Paleontology, 71:108–125.CrossRefGoogle Scholar
Chatterton, B. D. E., Siveter, D. J., Edgecombe, G. D., and Hunt, A. S. 1990. Larvae and relationships of the Calymenina (Trilobita). Journal of Paleontology, 64:255–277.CrossRefGoogle Scholar
Chatterton, B. D. E., and Speyer, S. E.In press. Trilobite ontogeny. In Whittington, H. B. (ed.), Treatise on Invertebrate Paleontology, Part O, Trilobita, Revised. Geological Society of America and University of Kansas Press, Lawrence.Google Scholar
Cisne, J. L. 1973. Life history of an Ordovician trilobite Triarthrus eatoni. Ecology, 54:135–142.CrossRefGoogle Scholar
Cooper, B. N. 1953. Trilobites from the Lower Champlainian formations of the Appalachian Valley. Geological Society of America Memoir 55, 69 p.Google Scholar
Dean, W. T. 1974. The trilobites of the Chair of Kildare Limestone (Upper Ordovician) of eastern Ireland. Part 2. Palaeontographical Society Monographs, 128:61–98.CrossRefGoogle Scholar
Farris, J. S. 1969. A successive approximations approach to character weighting. Systematic Zoology, 18:374–385.CrossRefGoogle Scholar
Fortey, R. A. 1990. Ontogeny, hypostome attachment and trilobite classification. Palaeontology, 33:529–576.Google Scholar
Fortey, R. A., and Owens, R. M. 1975. Proetida - a new order of trilobites. Fossils and Strata, 4:227–239.CrossRefGoogle Scholar
Fortey, R. A., and Owens, R. M. 1979. Enrollment in the classification of trilobites. Lethaia, 12:219–226.CrossRefGoogle Scholar
Holloway, D. J. 1980. Middle Silurian trilobites from Arkansas and Oklahoma U.S.A. Part 1. Palaeontographica A, 170, 85 p.Google Scholar
Hu, C.-H. 1971. Ontogeny and sexual dimorphism of Lower Paleozoic Trilobita. Palaeontographica Americana, 44:1–155.Google Scholar
Hu, C.-H. 1975. Ontogenies of four species of silicified Middle Ordovician trilobites from Virginia. Proceedings of the Geological Society of China, 18:115–127.Google Scholar
Ji, Z.-L. 1986. Upper Ordovician (middle Caradoc–early Ashgill) trilobites from the Pagoda Formation in south China. Professional Papers of Stratigraphy and Palaeontology, 15:1–39.Google Scholar
Lütke, F. 1980. Zue Evolution der altpaläozoischen Proetina (Trilobita). Senckenbergiana lethaea, 61:73–144.Google Scholar
Öpik, A. A. 1937. Trilobiten aus Estland. Acta et Commentationes Universitatis Tartuensis A, 32:1–163.Google Scholar
Owens, R. M. 1970. The middle Ordovician of the Oslo region, Norway, 23. The trilobite family Proetidae. Norsk Geologisk Tidsskrift, 50:309–332.Google Scholar
Owens, R. M. 1973a. Ordovician Proetidae (Trilobita) from Scandinavia. Norsk Geologisk Tidsskrift, 53:117–181.Google Scholar
Owens, R. M. 1973b. British Ordovician and Silurian Proetidae (Trilobita). Palaeontographical Society Monographs, 98 p.CrossRefGoogle Scholar
Přibyl, A. 1946. Přspevek k poznáni českých Proetidů. Rozpravy České Akademie Véd a Umění, 55:1–37.Google Scholar
Přibyl, A. 1964. Neue Trilobiten (Proetidae) aus dem böhmischen Devon. Spisanie na Bulgarskoto Geologichesko Druzhestvo, 25:23–51.Google Scholar
Přibyl, A., and Vaněk, J. 1987. Phylogeny of several lineages of the trilobite family Tropidocoryphidae (Proetacea). Contributions to Czechoslovakian Palaeontology and Evolutionary Science 1945-1985. Proceedings of seminar held in the Department of Palaeontology, Faculty of Natural Sciences, Charles University, Prague, p. 62–72.Google Scholar
Ruedemann, R. 1926. The Utica and Lorraine Formations of New York, part II, systematic paleontology, number 2. New York State Museum Bulletin, 272:1–227.Google Scholar
Rusconi, C. 1955. Fósiles cámbricos y ordovícicos al oeste de San Isidro, Mendoza. Revista del Museo de Historia Natural de Mendoza, 8:3–64.Google Scholar
Salter, J. W. 1864. A monograph of the British trilobites from the Cambrian, Silurian, and Devonian formations. Monographs of the Palaontographical Society, 1–80.Google Scholar
Shaw, F. C. 1968. Early Middle Ordovician Chazy trilobites of New York. New York State Museum and Science Service Memoir, 17, 163 p.Google Scholar
Speyer, S. E., and Chatterton, B. D. E. 1989. Trilobite larvae and larval ecology. Historical Biology, 3:27–60.CrossRefGoogle Scholar
Swofford, D. L. 1993. PAUP: Phylogenetic Analysis Using Parsimony, Version 3.1. Program distributed by the Illinois Natural History Survey, Champaign.Google Scholar
Swofford, D. L., and Maddison, W. P. 1987. Reconstructing ancestral character states under Wagner parsimony. Mathematical Biosciences, 87:199–229.CrossRefGoogle Scholar
Thomas, A. T. 1978. British Wenlock trilobites. Part 1. Palaeontographical Society Monographs, 132:1–56.CrossRefGoogle Scholar
Warburg, E. 1925. The trilobites of the Leptaena Limestone in Dalarne. Bulletin of the Geological Institution of the University of Uppsala, 17:1–446.Google Scholar
Whittington, H. B. 1957. Ontogeny of Elliptocephala, Paradoxides, Sao, Blainia, and Triarthrus (Trilobita). Journal of Paleontology, 31:934–946.Google Scholar
Xia, S.-F. 1978. Ordovician trilobites, p. 157–185.In Sinian to Permian stratigraphy and palaeontology of East Yangtze Gorge area. Geological Publishing House, Beijing.Google Scholar
Zhou, X.-Q., and Xiang, L.-W. 1993. Proetida (Trilobita) from the Pagoda Limestone (Caradoc) of northern upper Yangtze Platform, China. Stratigraphy and Paleontology of China, 2:51–75.Google Scholar