PMID: 9632387Jun 25, 1998Paper

Post-cambrian trilobite diversity and evolutionary faunas

Science
J M AdrainS R Westrop

Abstract

A cluster analysis of the stratigraphic distribution of all Ordovician trilobite families, based on a comprehensive taxonomic database, identified two major faunas with disjunct temporal diversity trends. The Ibex Fauna behaved as a cohort, declining through the Ordovician and disappearing at the end-Ordovician mass extinction. In contrast, the Whiterock Fauna radiated rapidly during the Middle Ordovician and gave rise to all post-Ordovician trilobite diversity. Its pattern of diversification matches that of the Paleozoic Evolutionary Fauna; hence, trilobites were active participants in the great Ordovician radiations. Extinction patterns at the end of the Ordovician are related to clade size: Surviving trilobite families show higher genus diversity than extinguished families.

References


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Citations

Jul 9, 2011·PloS One·Curtis R Congreve, Bruce S Lieberman
Dec 20, 2003·Proceedings of the National Academy of Sciences of the United States of America·James L Cornette, Bruce S Lieberman
Oct 27, 2009·Arthropod Structure & Development·Bruce S Lieberman, Talia S Karim
Mar 3, 2006·Evolution & Development·Philip C J DonoghueJohn E Repetski
Mar 13, 2021·Arthropod Structure & Development·Brigitte Schoenemann
Jul 7, 2000·Science·J M Adrain, S R Westrop
Aug 26, 1998·Science·A I Miller

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