Brachiopod molecular phylogeny

Cohen, B.L. and Gawthrop, A.B. (1996) Brachiopod molecular phylogeny. In: Third International Brachiopod Congress, Sudbury, Canada, 2-5 September 1995, pp. 73-80. ISBN 9054108169




Analysis by parsimony, maximum likelihood and distance methods of newly determined nuclear-encoded SSU rRNA gene sequences from 23 species of articulate brachiopods, six inarticulate brachiopods, two phoronids and an ectoproct, together with other sequences from published and unpublished sources show that lophorates cluster with protostome, not deuterostome metazoa and the phoronids cluster with inarticulate brachiopods. Phoronids, inarticulate, and articulate brachiopods form a monophyletic assemblage. A chiton is the closest known out-group of brachiopods plus phoronids. With articulates, separate rhynchonellid and long and short-looped terebratulid clades are identified and a thecideidine falls within the short-looped articulate clade. Forms with incomplete loops belong either to the short or long-looped clades, thus, a three-fold division of articulate brachiopods suffices to encompass the range of extant diversity so far examined. A perfect correlation was found between clade rank and lineage age rank for five well-dated brachiopod lineages. The important underpinning role of classical brachiopod taxonomy for molecular phylogeny is stressed.

Item Type:Conference Proceedings
Glasgow Author(s) Enlighten ID:Cohen, Dr Bernard
Authors: Cohen, B.L., and Gawthrop, A.B.
Subjects:Q Science > QL Zoology
Q Science > QH Natural history > QH426 Genetics
College/School:College of Medical Veterinary and Life Sciences
Journal Name:Brachiopods
Publisher:A.A. Balkema
Copyright Holders:Copyright © 1996 A. A.Balkema
First Published:First published in Brachipods: Proceedings of the third International Brachiopod Congress, Sudbury, Ontario, Canada, 2-5 September, 1995
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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