Quick
Search: 		  
advanced search
 GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help 
  Journal of Paleontology   Don't get GSW? Talk to your librarian.
JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Journal of Paleontology; September 2009; v. 83; no. 5; p. 794-803; DOI: 10.1666/08-096.1
© 2009 Paleontological Society
This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Google Scholar
Right arrow Articles by SUMRALL, C. D.
Right arrow Articles by McKINNEY, M. L.
GeoRef
Right arrow GeoRef Citation

ARTICLE

A NEW AGELACRINITID EDRIOASTEROID ATTACHED TO A LARGE HARDGROUND CLAST FROM THE MCKENZIE MEMBER OF THE MIFFLINTOWN MEMBER (SILURIAN) OF PENNSYLVANIA

COLIN D. SUMRALL1, CARLTON E. BRETT2 and MICHAEL L. McKINNEY1

1 Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, 37996
2 Carlton E. Brett, Department of Geology, University of Cincinnati, Ohio 45221

A new agelacrinitid edrioasteroid, Multiplexidiscus mckenziensis n. gen., n. sp. is described from the middle Silurian upper McKenzie Shale Member of the Mifflintown Formation of Pennsylvania. These edrioasteroids were attached to a large hardground clast that was reworked and flipped during a storm event. The occurrence of edrioasteroids in a near shore, perhaps in sub-normal salinity, is unusual for echinoderms. The edrioasteroids show a dispersed spatial distribution and weak thecal orientation. Multiplexidiscus differs from other agelacrinid edrioasteroids in the presence of a complex pattern of ambulacral cover plates combined with nearly straight paedomorphic ambulacra.

Key Words: Edrioasteroidea • Silurian • New York • McKenzie • Mifflintown






JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2009 by Paleontological Society