Phylogenetic and biogeographic analysis of sphaerexochine trilobites.

BACKGROUND: Sphaerexochinae is a speciose and widely distributed group of cheirurid trilobites. Their temporal range extends from the earliest Ordovician through the Silurian, and they survived the end Ordovician mass extinction event (the second largest mass extinction in Earth history). Prior to t...

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Bibliographic Details
Main Authors: Curtis R Congreve, Bruce S Lieberman
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2011-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC3124496?pdf=render