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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


EUBILATERIA

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/9780199606023.003.0021
Subject:
Biology, Evolutionary Biology / Genetics, Animal Biology

The Eubilateria is a clade with a whole suite of morphological apomorphies and a monophyly supported by practically all molecular phylogenies and studies of Hox genes. One of the most well-defined ... More


Phylum Chaetognatha

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/9780199606023.003.0055
Subject:
Biology, Evolutionary Biology / Genetics, Animal Biology

The Chaetognatha, or arrowworms, is a small phylum consisting of roughly 120 species of marine, mainly holopelagic ‘worms’. Some species, mainly of Spadella and Paraspadella, are benthic. ... More


DEUTEROSTOMIA

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/9780199606023.003.0056
Subject:
Biology, Evolutionary Biology / Genetics, Animal Biology

The Deuterostomia is a well-delimited group of bilateral animals known for their blastopore that develops into the anus in the adult and a mouth which is a new opening from the bottom of the ... More


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