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SCHIZOCOELIA

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/9780199606023.003.0024
Subject:
Biology, Evolutionary Biology / Genetics, Animal Biology

The Schizocoelia is a clade comprised of four phyla: Annelida, Sipuncula, Mollusca, and Nemertini. The name is synonymous with Eutrochozoa, and the groups within the Spiralia possess the lateral ... More


Molluscan Evolutionary Genomics

W. Brian Simison and Jeffrey L. Boore

in Phylogeny and Evolution of the Mollusca

Published in print:
2008
Published Online:
March 2012
ISBN:
9780520250925
eISBN:
9780520933705
Item type:
chapter
Publisher:
University of California Press
DOI:
10.1525/california/9780520250925.003.0017
Subject:
Biology, Animal Biology

This chapter focuses on studies of the evolutionary genomics of molluscans. It provides an overview of the state of molluscan mitochondrial genomics and outlines the promise of a broadening of this ... More


Phylum Annelida

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/9780199606023.003.0025
Subject:
Biology, Evolutionary Biology / Genetics, Animal Biology

Annelida is a phylum consisting of more than 16,500 described, living species of aquatic or terrestrial animals that are ecologically and systematically important. Two questionable species are the ... More


Phylum Sipuncul

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/9780199606023.003.0026
Subject:
Biology, Evolutionary Biology / Genetics, Animal Biology

The phylum Sipuncula is comprised of approximately 150 benthic, marine species. Fossils from the Lower Cambrian suggest a number of strikingly ‘modern’ sipunculans. The sipunculans have two body ... More


Phylum Nemertin

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/9780199606023.003.0028
Subject:
Biology, Evolutionary Biology / Genetics, Animal Biology

The phylum Nemertini, or ribbon worms, consists of about 1,400 described species, most of which are marine (benthic or pelagic). The nemertines are clearly monophyletic and, with the exception of ... More


Priapulids, Sipunculans, Echiurans, and Entoprocts

Peter J. Hayward and John S. Ryland

in Handbook of the Marine Fauna of North-West Europe

Published in print:
2017
Published Online:
April 2017
ISBN:
9780199549443
eISBN:
9780191847943
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199549443.003.0007
Subject:
Biology, Aquatic Biology

Of three groups characterized by unsegmented, worm-like bodies, Priapulida is a class within the phylum Cephalorhyncha, the sipunculans represent two classes within the phylum Sipuncula, while ... More


Annelida: Sipuncula

Alen Kristof and Anastassya S. Maiorova

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/9780199682201.003.0023
Subject:
Biology, Animal Biology

Sipuncula, commonly known as peanut worms, constitutes a small marine invertebrate taxon of about 150 species that is widespread and at all depths throughout the oceans. Adult sipunculans exhibit an ... More


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