Rex E. Crick
Contributor
LOCATION: Arlington, TX, United States
Professor of Earth and Environmental Sciences, University of Texas at Arlington, Arlington, Texas.
Primary Contributions (2)
Cambrian Period, earliest time division of the Paleozoic Era, extending from 538.8 million to 485.4 million years ago. The Cambrian Period is divided into four stratigraphic series: the Terreneuvian Series (538.8 million to 521 million years ago), Series 2 (521 million to 509 million years ago),…
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