Hostname: page-component-8448b6f56d-xtgtn Total loading time: 0 Render date: 2024-04-19T05:53:05.454Z Has data issue: false hasContentIssue false

Neoisorophusella, a new edrioasteroid genus from the Upper Mississippian of the eastern United States

Published online by Cambridge University Press:  14 July 2015

Thomas W. Kammer
Affiliation:
Department of Geology and Geography, West Virginia University, Morgantown 26506
Eric C. Tissue
Affiliation:
Department of Geology and Geography, West Virginia University, Morgantown 26506
Mark A. Wilson
Affiliation:
Department of Geology, The College of Wooster, Wooster, Ohio 44691

Abstract

Isorophid edrioasteroids representing a new genus and two new species are described from the Chesterian (Upper Mississippian) of Illinois and Maryland. Neoisorophusella lanei occurs in the Kinkaid Limestone of Johnson County, Illinois, and N. berryi occurs in the Greenbrier Limestone of Garrett County, Maryland. The problematic edrioasteroid species Hemicystites? carbonarius Bassler, 1935, from the Chesterian of southern West Virginia, is questionably assigned to Neoisorophusella.

Type
Research Article
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

Atherton, E., and Palmer, J. E. 1979. The Mississippian and Pennsylvanian (Carboniferous) Systems in the United States—Illinois. U.S. Geological Survey Professional Paper 1110-L, 42 p.Google Scholar
Bassler, R. S. 1935. New species of American Edrioasteroidea. Smithsonian Miscellaneous Collections, 95(6):133.Google Scholar
Bell, B. M. 1976a. A study of North American Edrioasteroidea. New York State Museum and Science Service Memoir 21, 447 p.Google Scholar
Bell, B. M. 1976b. Phylogenetic implications of ontogenetic development in the class Edrioasteroidea (Echinodermata). Journal of Paleontology, 50:10011019.Google Scholar
Brezinski, D. K. 1984. Dynamic stratigraphy and paleoecology of Upper Mississippian strata of the northcentral Appalachian Basin. Unpubl. Ph.D. dissertation, University of Pittsburgh, 120 p.Google Scholar
Cole, G. 1975. The ontogeny and population structure of an Isorophida edrioasteroid of the Kinkaid Formation of southern Illinois. Unpubl. M.S. thesis, Southern Illinois University, Carbondale, 30 p.Google Scholar
Smith, A. B. 1983. British Carboniferous Edrioasteroidea (Echinodermata). Bulletins of the British Museum of Natural History (Geology), 37(3):113138.Google Scholar
Smith, A. B. 1985. Cambrian eleutherozoan echinoderms and the early diversification of edrioasteroids. Palaeontology, 28:715756.Google Scholar