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The Phylogeny and Classification of Rhynchonelliformea

Published online by Cambridge University Press:  21 July 2017

Sandra J. Carlson  and
Lindsey R. Leighton
Sandra J. Carlson
Affiliation:
Department of Geology, University of California, Davis, CA 95616 USA
Lindsey R. Leighton
Affiliation:
Department of Geology, University of California, Davis, CA 95616 USA
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Extract

It is a great understatement to say that our knowledge of morphologic, stratigraphic, and paleobiogeographic variation among brachiopods has expanded enormously over the past 35 years. The number of brachiopod genera discovered and named since 1965 has more than doubled the approximately 1700 genera described in Part H of the Treatise on Invertebrate Paleontology (Williams and others, 1965). 4827 genera and subgenera named as of 1995 are listed in Doescher (1996); it is likely that over 5000 exist by now. Some are certain to be reevaluated as synonyms, but we have no reason to believe that this would apply to most new genera. This remarkable increase in raw data required a thorough reexamination of the phylogenetic relationships and higher-level classification of the group, encouraged largely by the revision of Part H of the Treatise, initiated in the late 1980s by Alwyn Williams.

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Research Article
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The Paleontological Society Papers , Volume 7: Brachiopods Ancient and Modern: A Tribute to G. Arthur Cooper , November 2001 , pp. 27 - 52
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Copyright © 2001 by The Paleontological Society 

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