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Eoandromeda and the origin of Ctenophora.
Swedish Museum of Natural History, Department of Paleobiology.
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2011 (English)In: Evolution & Development, ISSN 1520-541X, E-ISSN 1525-142X, Vol. 13, no 5, 408-414 p.Article in journal (Refereed) Published
Abstract [en]

The Ediacaran fossil Eoandromeda octobrachiata had a high conical body with eight arms in helicospiral arrangement along the flanks. The arms carried transverse bands proposed to be homologous to ctenophore ctenes (comb plates). Eoandromeda is interpreted as an early stem-group ctenophore, characterized by the synapomorphies ctenes, comb rows, and octoradial symmetry but lacking crown-group synapomorphies such as tentacles, statoliths, polar fields, and biradial symmetry. It probably had a pelagic mode of life. The early appearance in the fossil record of octoradial ctenophores is most consistent with the Planulozoa hypothesis (Ctenophora is the sister group of Cnidaria + Bilateria) of metazoan phylogeny.

Place, publisher, year, edition, pages
2011. Vol. 13, no 5, 408-414 p.
Keyword [en]
Problematicum, Ctenophora, Development, Ediacaran, China
National Category
Natural Sciences Zoology Geology
Research subject
Ecosystems and species history; Ecosystems and species history
Identifiers
URN: urn:nbn:se:nrm:diva-611DOI: 10.1111/j.1525-142X.2011.00499.xOAI: oai:DiVA.org:nrm-611DiVA: diva2:765259
Funder
Swedish Research Council, 2007-4484
Available from: 2014-11-21 Created: 2014-08-29 Last updated: 2014-11-26Bibliographically approved

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