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A gallery of the major bilaterian clades

Alessandro Minelli

in Perspectives in Animal Phylogeny and Evolution

Published in print:
2008
Published Online:
May 2009
ISBN:
9780198566205
eISBN:
9780191713866
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198566205.003.0006
Subject:
Biology, Animal Biology, Evolutionary Biology / Genetics

Current perspectives on the phylogeny of the major lineages of bilaterian animals are reviewed. Molecular phylogenetics suggests that the Acoela represent the most basally branching group of living ... More


ACOELOMORPHA

Claus Nielsen

in Animal Evolution: Interrelationships of the Living Phyla

Published in print:
2011
Published Online:
December 2013
ISBN:
9780199606023
eISBN:
9780191774706
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199606023.003.0017
Subject:
Biology, Evolutionary Biology / Genetics, Animal Biology

Acoelomorpha is a clade comprised of three phyla that have been interpreted as closely related ‘primitive turbellarians’: acoels, nemertodermatids, and Xenoturbella. Molecular phylogenetics shows ... More


Phylum Nemertodermatid

Claus Nielsen

in Animal Evolution: Interrelationships of the Living Phyla

Published in print:
2011
Published Online:
December 2013
ISBN:
9780199606023
eISBN:
9780191774706
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199606023.003.0019
Subject:
Biology, Evolutionary Biology / Genetics, Animal Biology

The phylum Nemertodermatida is comprised of about ten species of millimetre-sized ‘turbellariform’ worms that are mostly interstitial. One species, Meara, lives as a commensal in the pharynx of ... More


Phylum Xenoturbellida

Claus Nielsen

in Animal Evolution: Interrelationships of the Living Phyla

Published in print:
2011
Published Online:
December 2013
ISBN:
9780199606023
eISBN:
9780191774706
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199606023.003.0020
Subject:
Biology, Evolutionary Biology / Genetics, Animal Biology

The phylum Xenoturbellida, along with Acoela and Nemertodermatida, is possibly a monophyletic sister group of the Bilateria, or may represent one or two side branches on the line leading to the ... More


Phylum Acoela

Claus Nielsen

in Animal Evolution: Interrelationships of the Living Phyla

Published in print:
2011
Published Online:
December 2013
ISBN:
9780199606023
eISBN:
9780191774706
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199606023.003.0018
Subject:
Biology, Evolutionary Biology / Genetics, Animal Biology

The Acoela is a small phylum which comprises approximately 400 species of small, mostly marine ‘worms’ that are completely ciliated. The acoels have an unquestioned monophyly and a well-documented ... More


Acoelomorpha

Andreas Hejnol

in Structure and Evolution of Invertebrate Nervous Systems

Published in print:
2015
Published Online:
March 2016
ISBN:
9780199682201
eISBN:
9780191813436
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199682201.003.0007
Subject:
Biology, Animal Biology

The nervous system architecture of the Acoelomorpha is very diverse, ranging from a simple basiepidermal nerve plexus over basiepidermal condensations into neurite bundles and—in more derived ... More


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