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BILATERIA

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/9780199606023.003.0016
Subject:
Biology, Evolutionary Biology / Genetics, Animal Biology

The Bilateria is a clade comprised of two well-separated groups, Acoelomorpha and Eubilateria. The acoelomorphs have the structure of a bilateral gastraea, while the eubilaterians have a tube-shaped ... 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 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 Platyhelminthes

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/9780199606023.003.0029
Subject:
Biology, Evolutionary Biology / Genetics, Animal Biology

Platyhelminthes, or flatworms, is a phylum consisting of about 25,000 described species of ‘turbellarians’, flukes, and tapeworms. The economically important parasitic flukes (Digenea and Monogenea) ... More


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