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The entangled phylogeny of the Bilateria

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/9780198566205.003.0005
Subject:
Biology, Animal Biology, Evolutionary Biology / Genetics

The Urbilateria, the last common ancestors of all living bilaterians, are generally reconstructed as metazoans with a remarkable degree of morphological complexity, but the current view of the acoel ... More


Invertebrate Problematica: kinds, causes, and solutions

Ronald A. Jenner, D. Timothy, and J. Littlewood

in Animal Evolution: Genomes, Fossils, and Trees

Published in print:
2009
Published Online:
September 2009
ISBN:
9780199549429
eISBN:
9780191721601
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199549429.003.0011
Subject:
Biology, Evolutionary Biology / Genetics, Developmental Biology

Problematica are taxa that defy robust phylogenetic placement. Traditionally the term was restricted to fossil forms, but it is clear that extant taxa may be just as difficult to place, whether using ... More


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


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


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