Quick
Search: 		  
advanced search
 GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help 
  Journal of Paleontology   Email Content Delivery
JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Journal of Paleontology; May 1965; v. 39; no. 3; p. 398-413
This Article
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
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
Right arrow Order Hardcopy of Full Text via AGI/GeoRef
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Koenig, J. W.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation

Ontogeny of two Devonian crinoids

John W. Koenig

Growth series of immature crinoids of Synbathocrinus canandaigua (Goldring) and Cyttarocrinus eriensis (Hall) begin with simple armless calyxes in infancy and gradually develop arms during adolescence. Maturity is attained with the development of an anal structure and a complete tegumen. The sequence of arm development of S. canandaigua differs from known growth sequences of other crinoids, but is comparable to Kallimorphocrinus Weller, 1930. The growth sequence of C. eriensis is the same as that for Allagecrinus Carpenter and Etheridge, 1881, and indicates possible taxonomic relationship.

This record provided courtesy of AGI/GeoRef.






JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2008 by Paleontological Society