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The Precambrian Era: Part 1

by: Hailey Rooney

The Precambrian Era: Part 1 GSC 111

Marketplace > University of Miami > Geology > GSC 111 > The Precambrian Era Part 1
Hailey Rooney
GPA 3.4
Earth System History
Larry Peterson

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About this Document

The first week's notes of content that will be on the second exam. Outlines the PowerPoint slides for Part 1 of The Precambrian Era.
Earth System History
Larry Peterson
Class Notes
25 ?




Popular in Earth System History

Popular in Geology

This 1 page Class Notes was uploaded by Hailey Rooney on Sunday February 22, 2015. The Class Notes belongs to GSC 111 at University of Miami taught by Larry Peterson in Spring2015. Since its upload, it has received 66 views. For similar materials see Earth System History in Geology at University of Miami.


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Date Created: 02/22/15
The Precambrian Era Adam Sedgwick described the Cambrian system Base of the Cambrian marked by the first appearance of a diversity of skeletal hard parts in the record Cambrian faunas are a record of life in shallow marine settings on continental margins Tommotian fauna are the earliest of the Cambrian O Oldest skeletonized fauna on Earth Cambrian explosion rapid explosive growth of species and generic richness 0 Number of genera increased tenfold over 15 million years Trilobites exhibit isometric growth all parts of organism grow at the same rate 0 Molt exoskeleton off as they grow Brachiopods have bilateral symmetry O Inarticulate brachiopods lack a tooth and socket structure to hold valves together Archaeocyathids reefforming animals that were suspension feeders that pumped water through bowlshaped skeletons Condonts eellike vertebrate with many teeth Chengjiang Fossil Site famous Cambrian Lagerstatten diverse fossil site


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