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 Similar articles in Web of Science 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 Powers, C. M. Articles by Pachut, J. F. Search for Related Content GeoRef GeoRef Citation

Diversity and Distribution of Triassic Bryozoans in the Aftermath of the End-Permian Mass Extinction

¹ Department of Earth Sciences, University of Southern California, 3651 Trousdale Parkway, Los Angeles, 90089-0740, <jamet{at}usc.edu>
² Department of Earth Sciences, Indiana University–Purdue University at Indianapolis, 723 W. Michigan Street, Indianapolis, 46202, <jpachut{at}iupui.edu>

Seventy-three species of stenolaemate bryozoans are documented worldwide from the Triassic. Stage-level diversity and paleogeographical analyses reveal that the recovery of bryozoans following the end-Permian mass extinction was delayed until the Middle Triassic. Early Triassic bryozoans faunas, dominated by members of the Order Trepostomida, were depauperate and geographically restricted. Bryozoan diversity increased during the Middle Triassic and diversity peaked in the Carnian (early Late Triassic). High extinction rates throughout the Late Triassic led to the extinction of all stenolaemate orders except the Cyclostomida by the end of the Triassic. Comparisons between global carbonate rock volume, outcrop surface area, and bryozoan diversity indicate that the documented diversity pattern for bryozoans may have been related, in part, to the availability of carbonate environments during the Triassic.

This article has been cited by other articles:

				H. SONG, J. TONG, Z.Q. CHEN, H. YANG, and Y. WANG END-PERMIAN MASS EXTINCTION OF FORAMINIFERS IN THE NANPANJIANG BASIN, SOUTH CHINA Journal of Paleontology, September 1, 2009; 83(5): 718 - 738. [Abstract] [Full Text] [PDF]