On the phylogeny of the metazoa in the light of Cycliophora and Micrognathozoa

M. V. Sorensen; P. Funch; E. Willerslev; Anders J. Hansen; J. Olesen

On the phylogeny of the metazoa in the light of Cycliophora and Micrognathozoa

M. V. Sorensen, P. Funch, E. Willerslev, Anders J. Hansen, J. Olesen

93 Citations (Scopus)

Abstract

The phylogenetic positions of Cycliophora and Micrognathozoa are examined in a computer-assisted cladistic analysis of Metazoa. In the preferred tree, Cycliophora and Entoprocta form a monophylum, supported by the presence of mushroom-shaped extensions into the epidermis, originating from the basal lamina. An earlier suggested close relationship between Cycliophora and Ectoprocta is rejected. The rotifer-like animal Micrognathozoa is placed in the clade Gnathifera, which also contains Gnathostomulida, Seisonida, Acanthocephala and Eurotatoria. Gnathifera is supported by the presence of jaws with a unique ultrastructure and cross-striated muscles attached to the jaw elements by epithelial cells. The jaws in Acanthocephala are considered secondarily reduced. In the analysis, Rotifera turns out to be paraphyletic with respect to Acanthocephala.

Original language	English
Journal	Zoologischer Anzeiger
Volume	239
Issue number	3-4
ISSN	0044-5231
Publication status	Published - 2000

Cite this

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title = "On the phylogeny of the metazoa in the light of Cycliophora and Micrognathozoa",

abstract = "The phylogenetic positions of Cycliophora and Micrognathozoa are examined in a computer-assisted cladistic analysis of Metazoa. In the preferred tree, Cycliophora and Entoprocta form a monophylum, supported by the presence of mushroom-shaped extensions into the epidermis, originating from the basal lamina. An earlier suggested close relationship between Cycliophora and Ectoprocta is rejected. The rotifer-like animal Micrognathozoa is placed in the clade Gnathifera, which also contains Gnathostomulida, Seisonida, Acanthocephala and Eurotatoria. Gnathifera is supported by the presence of jaws with a unique ultrastructure and cross-striated muscles attached to the jaw elements by epithelial cells. The jaws in Acanthocephala are considered secondarily reduced. In the analysis, Rotifera turns out to be paraphyletic with respect to Acanthocephala.",

author = "Sorensen, {M. V.} and P. Funch and E. Willerslev and Hansen, {Anders J.} and J. Olesen",

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T1 - On the phylogeny of the metazoa in the light of Cycliophora and Micrognathozoa

AU - Sorensen, M. V.

AU - Funch, P.

AU - Willerslev, E.

AU - Hansen, Anders J.

AU - Olesen, J.

N1 - 395PF Times Cited:60 Cited References Count:94

PY - 2000

Y1 - 2000

N2 - The phylogenetic positions of Cycliophora and Micrognathozoa are examined in a computer-assisted cladistic analysis of Metazoa. In the preferred tree, Cycliophora and Entoprocta form a monophylum, supported by the presence of mushroom-shaped extensions into the epidermis, originating from the basal lamina. An earlier suggested close relationship between Cycliophora and Ectoprocta is rejected. The rotifer-like animal Micrognathozoa is placed in the clade Gnathifera, which also contains Gnathostomulida, Seisonida, Acanthocephala and Eurotatoria. Gnathifera is supported by the presence of jaws with a unique ultrastructure and cross-striated muscles attached to the jaw elements by epithelial cells. The jaws in Acanthocephala are considered secondarily reduced. In the analysis, Rotifera turns out to be paraphyletic with respect to Acanthocephala.

AB - The phylogenetic positions of Cycliophora and Micrognathozoa are examined in a computer-assisted cladistic analysis of Metazoa. In the preferred tree, Cycliophora and Entoprocta form a monophylum, supported by the presence of mushroom-shaped extensions into the epidermis, originating from the basal lamina. An earlier suggested close relationship between Cycliophora and Ectoprocta is rejected. The rotifer-like animal Micrognathozoa is placed in the clade Gnathifera, which also contains Gnathostomulida, Seisonida, Acanthocephala and Eurotatoria. Gnathifera is supported by the presence of jaws with a unique ultrastructure and cross-striated muscles attached to the jaw elements by epithelial cells. The jaws in Acanthocephala are considered secondarily reduced. In the analysis, Rotifera turns out to be paraphyletic with respect to Acanthocephala.

M3 - Journal article

SN - 0044-5231

VL - 239

JO - Zoologischer Anzeiger

JF - Zoologischer Anzeiger

IS - 3-4

ER -

On the phylogeny of the metazoa in the light of Cycliophora and Micrognathozoa

Abstract

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