Enlighten
Research publications by members of the University of Glasgow
home > services > Enlighten

Monophyly of brachiopods and phoronids: reconciliation of molecular evidence with Linnaean classification (the subphylum Phoroniformea nov.)

Cohen, B.L. (2000) Monophyly of brachiopods and phoronids: reconciliation of molecular evidence with Linnaean classification (the subphylum Phoroniformea nov.). Proceedings of the Royal Society of London Series B: Biological Sciences, 267 (1440). pp. 225-231. ISSN 0962-8452 (doi:10.1098/rspb.2000.0991)

[img]
Preview
Text
Monophyly2.pdf

223Kb

Publisher's URL: http://dx.doi.org/10.1098/rspb.2000.0991

Abstract

Molecular phylogenetic analyses of aligned 18S rDNA gene sequences from articulate and inarticulate brachiopods representing all major extant lineages, an enhanced set of phoronids and several unrelated protostome taxa, confirm previous indications that in such data, brachiopod and phoronids form a well-supported clade that (on previous evidence) is unambiguously affiliated with protostomes rather than deuterostomes. Within the brachiopod-phoronid clade, an association between phoronids and inarticulate brachiopods is moderately well supported, whilst a close relationship between phoronids and craniid inarticulates is weakly indicated. Brachiopod-phoronid monophyly is reconciled with the most recent Linnaean classification of brachiopods by abolition of the phylum Phoronida and rediagnosis of the phylum Brachiopoda to include tubiculous, shell-less forms. Recognition that brachiopods and phoronids are close genealogical allies of protostome phyla such as molluscs and annelids, but are much more distantly related to deuterostome phyla such as echinoderms and chordates, implies either (or both) that the morphology and ontogeny of blastopore, mesoderm and coelom formation have been widely misreported or misinterpreted, or that these characters have been subject to extensive homoplasy. This inference, if true, undermines virtually all morphology-based reconstructions of phylogeny made during the past century or more.

Item Type:Article
Keywords:Protostomozoa Deuterostomozoa Brachiopoda Phoronida 18s-Rdna Dna Sequence
Status:Published
Refereed:Yes
Glasgow Author(s):Cohen, Dr Bernard
Authors: Cohen, B.L.
Subjects:Q Science > QH Natural history > QH426 Genetics
College/School:College of Medical Veterinary and Life Sciences
Journal Name:Proceedings of the Royal Society of London Series B: Biological Sciences
Publisher:The Royal Society
ISSN:0962-8452
ISSN (Online):1471-2954
Copyright Holders:Copyright © 2000 The Royal Society
First Published:First published in Proceedings of the Royal Society B: Biological Sciences 267(1440):225-231
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

University Staff: Request a correction | Enlighten Editors: Update this record

Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
162371RESOLVING THE PHYLOGENY OF PROTOSTOME PHYLA: WILL MITOCHONDRIAL DNAS HELPBernard CohenNatural Environment Research Council (NERC)GR9/01995MCSB - BIOCHEMISTRY & CELL BIOLOGY
151321PHYSIOLOGICAL AND PHARMACOLOGICAL CONSEQUENCES OF VARIATION AT THE ANGIOTENSIN CONVERTING ENZYME LOCUS IN MANJohn ConnellBritish Heart Foundation (BHF)PG/94133SCHOOL OF MEDICINE

Downloads per month over past year

View more statistics