The colonization of land by animals: molecular phylogeny and divergence times among arthropods

<p>Abstract</p> <p>Background</p> <p>The earliest fossil evidence of terrestrial animal activity is from the Ordovician, ~450 million years ago (Ma). However, there are earlier animal fossils, and most molecular clocks suggest a deep origin of animal phyla in the Precam...

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Bibliographic Details
Main Authors: Lyons-Weiler Maureen, Poling Laura L, Pisani Davide, Hedges S
Format: Article
Language:English
Published: BMC 2004-01-01
Series:BMC Biology
Online Access:http://www.biomedcentral.com/1741-7007/2/1