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Assembling the spiralian tree of life

Gonzalo Giribet, Casey W. Dunn, Gregory D. Edgecombe, Andreas Hejnol, Mark Q. Martindale, and Greg W. Rouse

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/9780199549429.003.0006
Subject:
Biology, Evolutionary Biology / Genetics, Developmental Biology

The advent of numerical methods for analyzing phylogenetic relationships, along with the study of morphology and molecular data, have driven our understanding of animal relationships for the past ... More


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


GNATHIFERA

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/9780199606023.003.0031
Subject:
Biology, Evolutionary Biology / Genetics, Animal Biology

The Gnathifera is a clade that originally comprised Gnathostomulida, Rotifera (known as Syndermata), and new group ‘A’ (Micrognathozoa) based on pronounced similarities of the jaw apparatus called ... More


PROTOSTOMIA

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/9780199606023.003.0022
Subject:
Biology, Evolutionary Biology / Genetics, Animal Biology

The Protostomia is a large clade of bilateral animals that are divided into Spiralia (Lophotrochozoa) and Ecdysozoa, based on molecular phylogenies. Previously known as Zygoneura, the group was named ... More


SPIRALIA (LOPHOTROCHOZOA)

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/9780199606023.003.0023
Subject:
Biology, Evolutionary Biology / Genetics, Animal Biology

The Spiralia (Lophotrochozoa) is a clade consisting of five phyla or groups of phyla whose interrelationships have proved difficult to resolve: Schizocoelia, Platyhelminthes, Gastrotricha, ... 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 Entoprocta

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/9780199606023.003.0036
Subject:
Biology, Evolutionary Biology / Genetics, Animal Biology

The phylum Entoprocta consists of approximately 200 described species that are benthic with trochophoratype larvae. Most species are marine, and only a few are found in the brackish zone. The fossil ... More


Nemertea (Nemertini)

Patrick Beckers and Jörn von Döhren

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/9780199682201.003.0016
Subject:
Biology, Animal Biology

Nemertea is a spiralian phylum comprising approximately 1300 species of mostly marine, nocturnal predators. Prey is captured with an eversible proboscis housed in a dorsally located fluid filled ... More


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