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 5 May 1978:
Vol. 200. no. 4341, pp. 529 - 531
DOI: 10.1126/science.200.4341.529-a
Prev | Table of Contents | Next

Articles

A Fish from the Upper Cambrian of North America

JOHN E. REPETSKI 1

1 U.S. Geological Survey, U.S. National Museum, Washington, D.C. 20560

Phosphatic dermal fragments of Anatolepis, interpreted as a heterostracan fish (class Agnatha), have been discovered in the Deadwood Formation of Late Cambrian age in northeastern Wyoming. This discovery extends back the age of the earliest known vertebrate fossils by approximately 40 million years. Other occurrences of Anatolepis in North America, Greenland, and Spitzbergen show that these fish had a widespread geographic distribution in Late Cambrian and Early Ordovician marine environments.

Submitted on September 16, 1977
Revised on January 19, 1978


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
The spatial and temporal diversification of Early Palaeozoic vertebrates.
M. P. Smith, P. C. J. Donoghue, and I. J. Sansom (2002)
Geological Society, London, Special Publications 194, 69-83
   Abstract »    PDF »
Molecular Evidence for Precambrian Origin of Amelogenin, the Major Protein of Vertebrate Enamel.
S. Delgado, D. Casane, L. Bonnaud, M. Laurin, J.-Y. Sire, and M. Girondot (2001)
Mol. Biol. Evol. 18, 2146-2153
   Abstract »    Full Text »    PDF »
Evidence from 18S ribosomal RNA sequences that lampreys and hagfishes form a natural group.
D. Stock and G. Whitt (1992)
Science 257, 787-789
   Abstract »    PDF »
A Reassessment of Astraspis desiderata, the Oldest North American Vertebrate.
D. K. Elliott and D. K. ELLIOTT (1987)
Science 237, 190-192
   Abstract »    PDF »
Biological Bulldozers and the Evolution of Marine Benthic Communities.
C. W. Thayer and C. W. THAYER (1979)
Science 203, 458-461
   Abstract »    PDF »
Early vertebrates and the Caledonian earth movements.
D. L. Dineley and E. J. Loeffler (1979)
Geological Society, London, Special Publications 8, 411-414
   Abstract »    PDF »


To Advertise     Find Products

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