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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.author Maisey, John G. en_US
dc.date.accessioned 2005-10-06T17:05:45Z
dc.date.available 2005-10-06T17:05:45Z
dc.date.issued 1981 en_US
dc.identifier.uri http://hdl.handle.net/2246/3537
dc.description 22 p. : ill. ; 26 cm. en_US
dc.description Includes 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.extent 10768488 bytes
dc.format.mimetype application/pdf
dc.language eng en_US
dc.language.iso en_US
dc.publisher New York, N.Y. : American Museum of Natural History en_US
dc.relation.ispartofseries American Museum novitates ; no. 2718 en_US
dc.subject.lcc QL1 .A436 no.2718, 1981 en_US
dc.subject.lcsh Ctenacanthus. en_US
dc.subject.lcsh Chondrichthyes, Fossil. en_US
dc.subject.lcsh Fishes, Fossil. en_US
dc.subject.lcsh Paleontology -- Paleozoic. en_US
dc.title 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 en_US
dc.title.alternative Historical review and revised diagnosis of Ctenacanthus, with a list of referred taxa en_US
dc.type text en_US


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  • American Museum Novitates
    Novitates (Latin for "new acquaintances"), published continuously and numbered consecutively since 1921, are short papers that contain descriptions of new forms and reports in zoology, paleontology, and geology. New numbers are published at irregular intervals.

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