Hostname: page-component-8448b6f56d-cfpbc Total loading time: 0 Render date: 2024-04-18T21:05:51.465Z Has data issue: false hasContentIssue false
  • English
  • Français

Ptychopariid trilobites of the Lower-Middle Cambrian boundary interval, Pioche Shale, southeastern Nevada

Published online by Cambridge University Press:  20 May 2016

Frederick A. Sundberg  and
Linda B. Mccollum
Frederick A. Sundberg
Affiliation:
Research Associate, Invertebrate Paleontology Section, Natural History Museum of Los Angeles County, 900 Exposition Blvd., Los Angeles, California 90007
Linda B. Mccollum
Affiliation:
Department of Geology, Eastern Washington University, Cheney, 99004-2499,
Get access Rights & Permissions [Opens in a new window]

Abstract

Twelve ptychopariid species assigned to five genera occur in the Lower-Middle Cambrian boundary interval, Pioche Shale, eastern Nevada. New taxa include one genus, Eokochaspis, and seven species, Eokochaspis nodosa, E. delamarensis, E. metalaspis, E. longspina, Kochina? walcotti, Mexicella antelopea, and M. robusta. Two new biozones, the Eokochaspis nodosa and overlying Amecephalus arrojosensis Biozones, are proposed between the Lower Cambrian Olenellus Biozone and the Middle Cambrian Plagiura-Poliella Biozone. In addition, the three remaining informal shale members of the Pioche Shale are formally named.

Type
Research Article
Information
Journal of Paleontology , Volume 74 , Issue 4 , July 2000 , pp. 604 - 630
Copyright
Copyright © The Paleontological Society 2000

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Blaker, M. R., and Peel, J. S. 1997. Lower Cambrian trilobites from North Greenland. Meddelelser on Grønland, Geoscience 35, 145 p.Google Scholar
Chang, W. T. 1964. The boundary between the Lower and Middle Cambrian with descriptions of some ptychopariid trilobites. Science Press, Peking, p. 1–38, 2 pls. (In Chinese; not seen).Google Scholar
Chang, W. T., Lu, Y., Zhu, Z., Qian, Y., Lin, H., Zhou, Z., Chang, S., and Yuan, J. 1980. Cambrian Trilobite Faunas of Southwestern China. Nanjing Institute of Geology and Palaeontology, Academia Sinica, 497 pp., 134 pls. (In Chinese with English Summary)Google Scholar
Cooper, G. A., and Arellano, A. R. V. 1952. Introduction and Stratigraphy, pp. 1–23. In Cooper, G. A., and Arellano, A. R. V., Johnson, J. H., Okulitch, V. J., Stayanow, A., and Lochman, C., Cambrian stratigraphy and paleontology near Caborca, northwestern Sonora, Mexico. Smithsonian Miscellaneous Collections 119(1):1–184, 31 pls.Google Scholar
Deiss, C. 1938, Cambrian formations and sections in part of the Cordilleran trough. Geological Society of America Bulletin, 49:1067–1166.CrossRefGoogle Scholar
Eddy, J. D., and McCollum, L. B. 1998. Early Middle Cambrian Albertella Biozone trilobites of the Pioche Shale, southeastern Nevada. Journal of Paleontology, 72:864–887.CrossRefGoogle Scholar
Fritz, W. H. 1968. Lower and early Middle Cambrian trilobites from the Pioche Shale, east-central Nevada, U.S.A. Palaeontology, 11:183–235.Google Scholar
Grabau, A. W. 1936. Paleozoic Formations in the Light of the Pulsation Theory, Volume 1, Lower and Middle Cambrian Pulsations (second edition). Peking Press, National University, 680 p.Google Scholar
Hall, J. 1859. Trilobites of the shales of the Hudson River Group. p. 59–62 In 12th Annual Report of the New York State Cabinet for Natural History. Albany, New York.Google Scholar
Hall, J., and Whitfield, R. P. 1877. Paleontology. United States Geologic Exploration of the 40th Parallel Report, number 4, part 2, p. 198–302.Google Scholar
Harrington, H. J., Henningsmoen, G., Howell, B. F., Jaanusson, V., Lochman-Balk, C., Moore, R. C., Poulsen, Chr., Rasetti, F., Richter, E., Richter, R., Schmidt, H., Sdzuy, K., Struve, W., Størmer, Leif, Stubblefield, C. J., Tripp, R., Weller, J. M. and Whittington, H. B. 1959. Arthropoda 1. In Moore, R.C. (ed.), Treatise on Invertebrate Paleontology, Pt. O, Geological Society of America and University of Kansas Press, Lawrence, Kansas, 560 pGoogle Scholar
Hughes, N. C. 1995. Trilobite taphonomy and taxonomy: A problem and some implications. Palaios, 10:283–285.CrossRefGoogle Scholar
Lochman, C. 1947. Analysis and revision of eleven Lower Cambrian trilobite genera. Journal of Paleontology, 21:59–71.Google Scholar
Lochman, C. 1948. New Cambrian trilobite genera from northwest Sonora, Mexico. Journal of Paleontology, 22:451–467, pls. 69-70.Google Scholar
Lochman, C. 1952. Trilobites, p. 60–162. In Cooper, A. G., and Arellano, A. R. V., Johnson, J. H., Okulitch, V. J., Stayanow, A., and Lochman, C., Cambrian stratigraphy and paleontology near Caborca, northwestern Sonora, Mexico. Smithsonian Miscellaneous Collections 119(1):1–184, 31 pls.Google Scholar
Lorenz, Th. 1906. Beiträge zur Geologie und Palaeontologie von Ostasien unter besonderer Berüchsichting der Provinz Schantung in China, 2 Palaeontologischer Teil. Deutsche Geologische Gesellschaf, 58:53–108.Google Scholar
Matthew, G. F. 1887. Illustrations of the fauna of the St. John Group, number 4, part 2. The smaller trilobites with eyes (Ptychoparidae and Ellipsocephalidae). Transactions and Proceedings of the Royal Society of Canada, series 2, 5:39–66.Google Scholar
McCollum, L. B., 1999. Lower-Middle Cambrian boundary interval in the cratonal sections from Las Vegas to the Grand Canyon. Geological Society of America Abstracts with Programs, 31(6): A-78.Google Scholar
Merrian, C. W. 1964. Cambrian Rocks of the Pioche Mining District, Nevada. U. S. Geological Survey, Professional Paper, 469, 59 p.Google Scholar
Palmer, A. R. 1954. An appraisal of the Great Basin Middle Cambrian trilobites described before 1900. U.S. Geological Survey Professional Paper, 264-D:53–86.Google Scholar
Palmer, A. R. 1957 Ontogenetic development of two olenellid trilobites. Journal of Paleontology, 31:105–128.Google Scholar
Palmer, A. R. 1958. Morphology and ontogeny of a Lower Cambrian ptychoparioid trilobite from Nevada. Journal of Paleontology 32:154–170.Google Scholar
Palmer, A. R. 1998. Terminal Early Cambrian extinction of the Olenellina: documentation from the Pioche Formation, Nevada. Journal of Paleontology 72:650–672.CrossRefGoogle Scholar
Palmer, A. R., and Halley, R. B. 1979. Physical stratigraphy and trilobite biostratigraphy of the Carrara Formation (Lower and Middle Cambrian) in the southern Great Basin. U.S. Geological Survey, Professional Paper, 1047, 131 p.Google Scholar
Poulsen, C. 1927. The Cambrian, Ozarkian and Canadian Faunas of Northwest Greenland. Meddelelser om Grønland, 70:233–343.Google Scholar
Rasetti, F. 1951. Middle Cambrian Stratigraphy and Faunas of the Canadian Rocky Mountains. Smithsonian Miscellaneous Collections, 116(5), 277 p.Google Scholar
Rasetti, F. 1955. Lower Cambrian ptychopariid trilobites from the conglomerates of Quebec. Smithsonian Miscellaneous Collections, 128(7), 35 p.Google Scholar
Resser, C. E. 1935. Nomenclature of some Cambrian trilobites. Smithsonian Miscellaneous Collections, 93(5), 29 p.Google Scholar
Resser, C. E. 1936. Second contribution to nomenclature on Cambrian trilobites. Smithsonian Miscellaneous Collections, 95(4), 29 p.Google Scholar
Resser, C. E. 1937. Third contribution to nomenclature on Cambrian trilobites. Smithsonian Miscellaneous Collections, 95(22), 59 p.Google Scholar
Resser, C. E. 1939. The Ptarmigania Strata of the Northern Wasatch Mountains. Smithsonian Miscellaneous Collections, 98, 72 p., pls 1-14.Google Scholar
Richter, R. 1933. Crustacea (Paläontologie), p. 840–864; Figs. A, 1-65. In Dittler, R., Joos, G., Korschelt, E., Linek, G., Oltmanns, F., Schaum, K. (eds.), Handwörtenbuch der Naturwissenschaften (second edition). Gustav Fisher Jena.Google Scholar
Shaw, A. B. 1957. Quantitative trilobite studies 11. Measurement of the dorsal shell of non-agnostidean trilobites. Journal of Paleontology, 31:193–207.Google Scholar
Shaw, A. B. 1962. Paleontology of northwestern Vermont, VIII. Fauna of the Hungerford Slate. Journal of Paleontology, 36:314–321.Google Scholar
Smith, L. H. 1998. Species level phenotypic variation in lower Paleozoic trilobites. Paleobiology, 24:17–36.CrossRefGoogle Scholar
Sundberg, F. A. 1999. Redescription of Alokistocare subcoronatum (Hall and Whitfield, 1877), the type species of Alokistocare, and the status of Alokistocaridae, Resser, 1938b (Ptychopariida: Trilobita, Middle Cambrian). Journal of Paleontology 73:1126–1143.CrossRefGoogle 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.CrossRefGoogle Scholar
Sundberg, F. A., and McCollum, L. B. 1999. Biostratigraphic correlation of the Lower-Middle Cambrian boundary interval in the Cordilleran Region of Laurentia. Geological Society of America Abstracts with Programs, 31(6):A-100.Google Scholar
Swinnerton, H. H. 1915. Suggestions for a revised classification of trilobites. Geological Magazine, new series, 2:407–496, 538-545.Google Scholar
Walch, J. E. I. 1771. Die Naturgeschichte der Versteinerungen, zur Erläuterung der Knorrischen Sammlung von Merkwürdigkeiten der Natur, Volume 4, part 3. Paul Jonathan Felstecker, Nürnberg, 184 p., 81 pls.Google Scholar
Walcott, C. D. 1886. Second contribution to the studies on the Cambrian faunas of North America. U.S. Geology Survey Bulletin, 30:1–369, pl. 1-33.Google Scholar
Walcott, C. D. 1912a. Cambrian Brachiopoda. United States Geological Survey, Monograph, 51(1), 872 p., 76 text-figures; 51(2), 363 p., 104 plates.Google Scholar
Walcott, C. D. 1912b. Cambrian geology and paleontology 2. No. 8: The Sardinian Cambrian genus Olenopsis in America. Smithsonian Miscellaneous Collections, 57(8):239–249, pl. 36.Google Scholar
Walcott, C. D. 1917. Cambrian geology and paleontology, 3, Fauna of the Mount Whyte formation. Smithsonian Miscellaneous Collections, 67(3):61–114.Google Scholar
Walcott, C. D. 1924. Cambrian and Ozarkian trilobites. Smithsonian Miscellaneous Collections, 75:53–60.Google Scholar
Whittington, H. B., Chatterton, B. D. E., Speyer, S. E., Fortey, R. A., Owens, R. M., Chang, W. T., Dean, W. T., Fortey, R. A., Jell, P. A., Laurie, J. R., Palmer, A. R., Repina, L. N., Rushton, A. W. A., Shergold, J. H., Clarkson, E. N. K., Wilmot, N. V., and Kelly, S. R. A. 1997. Introduction, Order Agnostida, Order Redlichiida. Volume 1. In Kaesler, R. L. (ed.), Treatise on Invertebrate Paleontology, Pt. O, Arthropoda 1, Trilobita, Revised. Geological Society of America and University of Kansas Press, Lawrence, Kansas. 530 p.Google Scholar