Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 4 October 1968:
Vol. 162. no. 3849, pp. 119 - 120
DOI: 10.1126/science.162.3849.119
Prev | Table of Contents | Next

Articles

Dipleurozoa from Lower Silurian of North America

Helgi Johnson 1 and Steven K. Fox Jr. 1

1 Department of Geology, Rutgers-The State University, New Brunswick, New Jersey 08903

In a problematical fauna discovered in Australia, 152 meters below diagnostic Lower Cambrian species, are fossilized remains belonging in the phylum Coelenterata. These jellyfish-like fossils were defined as a new class(Dipleurozoa) by Harrington and Moore because of their strong bilateral symmetry and differentiated extremities. The class was not reported elsewhere before many specimens were discovered recently in the Shawangunk (Tuscarora) formation at Delaware Water Gap, Pennsylvania. Three new species belonging to a new genus can be recognized, the indication being that the class ranges stratigraphically from the infra-Cambrian to at least the Lower Silurian, and geographically from Australia to eastern North America.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Burgess Shale Faunas and the Cambrian Explosion.
J. Conway Morris and S. C. MORRIS (1989)
Science 246, 339-346
   Abstract »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)