Hostname: page-component-745bb68f8f-l4dxg Total loading time: 0 Render date: 2025-01-14T17:20:46.595Z Has data issue: false hasContentIssue false
  • English
  • Français

New genus of Late Cambrian gastropod

Published online by Cambridge University Press:  20 May 2016

Gerald O. Gunderson
Gerald O. Gunderson*
Affiliation:
Middleton–Cross Plains School District, Middleton, Wisconsin 53562
Get access Rights & Permissions [Opens in a new window]

Extract

Gastropods are rare fossils in the Cambrian of Wisconsin. They are usually small and flattened. During the summer of 1978, while collecting trilobites along the western side of the state, I discovered a new gastropod in the Crepicephalus zone (as defined by Twenhofel, Raasch, and Thwaites, 1935; Nelson, 1951). It is a three-dimensional fossil represented by external mold and steinkern. This was the only gastropod uncovered during the splitting of over 200 kilograms of sandstone, which also yielded hundreds of trilobite cranidia and pygidia.

Type
Taxonomic Notes
Information
Journal of Paleontology , Volume 67 , Issue 6 , November 1993 , pp. 1083 - 1084
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., Batten, R. L., and Yochelson, E. L. 1960. Descriptions of Paleozoic gastropods, p. 180. In Moore, R. C. (ed.), Treatise on Invertebrate Paleontology, Vol. I, Mollusca 1. Geological Society of America and University of Kansas Press, Lawrence.Google Scholar
M'Coy, F. 1851. On some new Silurian Mollusca. Annals and Magazine of Natural History, 2nd Series, 7:45–63.Google Scholar
Nelson, C. A. 1951. Cambrian Trilobites from the St. Croix Valley. Journal of Paleontology, 25:565–784.Google Scholar
Thiele, J. 1925. Mollusca–Weichtiere, p. 15–96. In Kukenthal, W. (ed.), Handbuch der Zoologie. Funfter Band, Erste Halfte, Erste Lieferung, Berlin and Leipzig.Google Scholar
Twenhofel, W. H., Raasch, G. O., and Thwaites, F. T. 1935. Cambrian strata of Wisconsin. Geological Society of America, Bulletin 46, 1,695 p.Google Scholar
Ulrich, E. O., and Scofield, W. H. 1897. The Lower Silurian Gastropoda of Minnesota. Minnesota Geological Survey, Final Report 3, P 2:813–1081.Google Scholar