Hostname: page-component-cd9895bd7-jn8rn Total loading time: 0 Render date: 2024-12-23T11:51:28.410Z Has data issue: false hasContentIssue false
  • English
  • Français

Operculum of the early Middle Ordovician gastropod Palliseria robusta Wilson

Published online by Cambridge University Press:  19 May 2016

Ellis L. Yochelson
Ellis L. Yochelson*
Affiliation:
U.S. Geological Survey, Washington, D.C. 20560
Get access Rights & Permissions [Opens in a new window]

Abstract

A flat, thin, platelike operculum from the Antelope Valley Limestone of central Nevada fits the aperture of the shell of Palliseria robusta; abundance of these shells at the locality where the operculum occurs further supports its association with P. robusta. The operculum shows no evidence of spiral growth; its inner surface has one muscle prong. Palliseria shells are present in Nevada in enormous numbers, but opercula are known from only three localities. Because these platelike opercula are less robust than the coiled shells, most opercula may have been destroyed by wave and current movements after death of the animals.

Type
Research Article
Information
Journal of Paleontology , Volume 60 , Issue 3 , May 1986 , pp. 656 - 660
Copyright
Copyright © The Paleontological Society 

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

Knight, J. B. 1941. Paleozoic gastropod genotypes. Geological Society of America, Special Paper 32, 510 p.Google Scholar
Knight, J. B. 1952. Primitive fossil gastropods and their bearing on gastropod classification. Smithsonian Miscellaneous Collections, 117(13):56 p.Google Scholar
Lewis, R. O. and Yochelson, E. L. 1978. Palliseria robusta Wilson (Gastropoda) in the Oil Creek Formation, Arbuckle Mountains, Oklahoma. Oklahoma Geology Notes, 38:43–48.Google Scholar
Ross, R. J. 1970. Ordovician brachiopods, trilobites, and stratigraphy in eastern and central Nevada. U.S. Geological Survey Professional Paper 639, 103 p.Google Scholar
Salter, J. W. 1859. Figures and descriptions of Canadian organic remains, Decade I. Geological Survey of Canada, 47 p.CrossRefGoogle Scholar
Teller, E. 1910. An operculated gastropod from the Niagara formation of Wisconsin. Wisconsin Academy of Sciences, Transactions, 16:1286–1288.Google Scholar
Yochelson, E. L. 1957. Notes on the gastropod Palliseria robusta Wilson. Journal of Paleontology, 31:648–650.Google Scholar
Yochelson, E. L. 1979. Gastropod opercula as objects for paleobiogeographic study, p. 37–43. In Gray, J. and Boucot, A. J. (eds.), Historical Biogeography, Plate Tectonics, and the Changing Environment. Oregon State University Press.Google Scholar
Yochelson, E. L. and Jones, C. R. 1968. Teiichispira, a new Early Ordovician gastropod genus. U.S. Geological Survey Professional Paper, 613-B:B1–B2.Google Scholar
Yochelson, E. L. and Linsley, R. M. 1972. Opercula of two gastropods from the Lilydale Limestone (Early Devonian) of Victoria, Australia. National Museum of Victoria, Memoir, 33:1–13.Google Scholar
Yochelson, E. L. and Wise, O. A. Jr. 1972. A life association of shell and operculum in the Early Ordovician gastropod Ceratopea unguis . Journal of Paleontology, 46:681–685.Google Scholar