Studies on the Paleozoic selachian genus Ctenacanthus Agassiz. No. 1, Historical review and revised diagnosis of Ctenacanthus, with a list of referred taxa. American Museum novitates ; no. 2718

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dc.contributor.authorMaisey, John G.en_US
dc.date.accessioned2005-10-06T17:05:45Z
dc.date.available2005-10-06T17:05:45Z
dc.date.issued1981en_US
dc.description22 p. : ill. ; 26 cm.en_US
dc.descriptionIncludes bibliographical references (p. 21-22).en_US
dc.description.abstract"Ctenacanthus Agassiz is a genus of elasmobranch, originally recognized by its dorsal finspines but now known from more complete remains. However, many other fossils, including isolated spines and complete fish, have been included in Ctenacanthus, although the spines differ from those of the type species, C. major, and from other presumably related species. Earlier diagnoses of Ctenacanthus are critically reviewed and the significance of previous diagnostic changes is discussed. It is concluded that Ctenacanthus sensu lato is paraphyletic. Some spines previously assigned to this taxon resemble living elasmobranch finspines, whereas others resemble hybodontid finspines. The fish described by Dean as Ctenacanthus clarkii should be referred to C. compressus. Both C. clarkii and C. compressus finspines are sufficiently like those of C. major for these species to remain within the genus. Ctenacanthus compressus is the only articulated Paleozoic shark so far described which can be assigned to Ctenacanthus. Ctenacanthus costellatus finspines are not like those of C. major, but instead resemble Sphenacanthus spines. Goodrichthys eskdalensis may be closely related to Ctenacanthus"--P. [1].en_US
dc.format.extent10768488 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2246/3537
dc.languageengen_US
dc.language.isoen_US
dc.publisherNew York, N.Y. : American Museum of Natural Historyen_US
dc.relation.ispartofseriesAmerican Museum novitates ; no. 2718en_US
dc.subject.lccQL1 .A436 no.2718, 1981en_US
dc.subject.lcshCtenacanthus.en_US
dc.subject.lcshChondrichthyes, Fossil.en_US
dc.subject.lcshFishes, Fossil.en_US
dc.subject.lcshPaleontology -- Paleozoic.en_US
dc.titleStudies on the Paleozoic selachian genus Ctenacanthus Agassiz. No. 1, Historical review and revised diagnosis of Ctenacanthus, with a list of referred taxa. American Museum novitates ; no. 2718en_US
dc.title.alternativeHistorical review and revised diagnosis of Ctenacanthus, with a list of referred taxaen_US
dc.typetexten_US

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