Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-22T10:18:40.075Z Has data issue: false hasContentIssue false
  • English
  • Français

A new crab, Zygastrocarcinus cardsmithi (Crustacea, Decapoda), from the lower Pierre Shale, southeastern Montana

Published online by Cambridge University Press:  14 July 2015

Gale A. Bishop
Gale A. Bishop*
Affiliation:
Department of Geology, Georgia Southern College, Statesboro 30460-8149
Get access Rights & Permissions [Opens in a new window]

Abstract

The third species belonging to Zygastrocarcinus from the Cretaceous of the Western Interior is represented by a single carapace collected from below the Groat Sandstone Bed, Gammon Ferruginous Member, Pierre Shale of Carter County, Montana. Comparison of Zygastrocarcinus cardsmithi n. sp. with the other North American congeners, Z. mendryki (Bishop, 1982) and Z. griesi Bishop, 1983, and with the Pacific Slope species Z. richardsoni (Woodward, 1896) suggests early separation of the Pacific Slope and Western Interior lineage having Z. cardsmithi as a possible ancestor to Z. mendryki and Z. griesi.

Type
Research Article
Information
Journal of Paleontology , Volume 60 , Issue 5 , September 1986 , pp. 1097 - 1102
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

Bishop, G. A. 1981. Occurrence and fossilization of the Dakoticancer Assemblage, Upper Cretaceous Pierre Shale, S.D., p. 383–413. In Gray, J. et al. (eds.), Communities of the Past. Hutchinson Ross Publishing Co., Stroudsburg, Pennsylvania.Google Scholar
Bishop, G. A. 1982. Homolopsis mendryki: a new fossil crab (Crustacea, Decapoda) from the Late Cretaceous Dakoticancer Assemblage, Pierre Shale (Maastrichtian) of South Dakota. Journal of Paleontology, 56:221–225.Google Scholar
Bishop, G. A. 1983. Two new species of crabs, Notopocorystes (Eucorystes) eichhorni and Zygastrocarcinus griesi (Decapoda, Brachyura) from the Bearpaw Shale (Campanian) of north-central Montana. Journal of Paleontology, 57:900–910.Google Scholar
Bishop, G. A. 1985. Fossil decapod crustaceans from the Gammon Ferruginous Member, Pierre Shale (Early Campanian), Black Hills, South Dakota. Journal of Paleontology, 59:605–624.Google Scholar
Cook, L. T., Collins, R. K. and Davidson, W. F. 1949. Sheet 9, Little Missouri River, Marmarth to North Fork. U.S. Geological Survey River Survey.Google Scholar
Mapel, W. J., Robinson, C. S. and Theobald, P. K. 1959. Geologic and structure contour map of the northern and western flanks of the Black Hills, Wyoming, Montana, and South Dakota. U.S. Geological Survey, Oil and Gas Investigations Map OM-191.Google Scholar
Rathbun, M. J. 1926. The fossil stalk-eyed Crustacea of the Pacific Slope of North America. U.S. National Museum, Bulletin 138:1–155.Google Scholar
Whiteaves, J. F. 1885. Note on a decapod crustacean from the Upper Cretaceous of Highwood River, Alberta, Northwest Territories. Royal Society of Canada Transactions for 1884, 2:237–238.Google Scholar
Woodward, H. 1896. On some podophthalmatus Crustacea from the Cretaceous formations of Vancouver and Queen Charlotte Islands. Geological Society of London, Quarterly Journal, 52:221–228.CrossRefGoogle Scholar