Quick Search:    advanced search

GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help

Journal of Paleontology

This Article Figures Only Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Kammer, T. W. Articles by Springer, G. S. Search for Related Content GeoRef GeoRef Citation

Biostratigraphy Of Crinoids From the Wymps Gap Member of the Greenbrier Formation (Mississippian, Chesterian) in Northern West Virginia

¹ Department of Geology and Geography, West Virginia University, Morgantown 26506-6300, <tkammer{at}wvu.edu>
² Department of Geological Sciences, Ohio University, Athens 45701, <springeg{at}ohio.edu>

Crowns of four crinoid species, Talarocrinus planus Weller, 1920, Phacelocrinus longidactylus (McChesney, 1860), Ampelocrinus mundus? Kirk, 1942, and Phanocrinus maniformis (Yandell and Shumard, 1847) are reported from the limestones of the Wymps Gap Member of the Greenbrier Formation in northern West Virginia. Collectively these species indicate an early Chesterian age for the Wymps Gap Member, with the occurrence of T. planus indicating correlation with the Ridenhower (Paint Creek) Formation of the Illinois Basin. A review of the 17 species currently placed in Talarocrinus suggests that the Talarocrinus zone ranges no higher than the Ridenhower Formation in the Upper Gnathodus bilineatus conodont zone of the late Visean. The new occurrence of A. mundus extends its range upwards from the Genevievian substage of the Chesterian.

Previous studies have used sequence stratigraphy to correlate the Wymps Gap Member with the lower part of the Union Limestone Formation of the Greenbrier Group in southern West Virginia, which in turn has been correlated with the Ridenhower Formation. The occurrence of T. planus in the Wymps Gap Member provides independent confirmation of the correlations based on sequence stratigraphy between the Appalachian and Illinois basins. Correlation of the overlying Reynolds Member of the Mauch Chunk Formation with the Glen Dean Formation of the Illinois Basin suggests a significant unconformity between the Greenbrier Formation and Mauch Chunk Formation in northern West Virginia.

This article has been cited by other articles:

				W. I. AUSICH and T. W. KAMMER GENERIC CONCEPTS IN THE PLATYCRINITIDAE AUSTIN AND AUSTIN, 1842 (CLASS CRINOIDEA) Journal of Paleontology, September 1, 2009; 83(5): 694 - 717. [Abstract] [Full Text] [PDF]