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Species / Terebellum Distortum


History and Synonymy


Description of Terebellum distortum d’Archiac & Haime, 1853 by Cossmann & Pissarro, 1909:

  • “Large, narrow, slender, fusiform; spire long, narrow conical; whorls somewhat convex, very tall, increasing irregularly, separated by very oblique channelled sutures. Body-whorl very large, constituting about five-fifth of the total height, with slightly attenuated base. Aperture narrow, columella feebly excavated.”
  • “Occurrence. - Upper Ranikot. Zone 3: North of Leilan coal-pit. Zone 4: Jhirak.”
  • “Remarks. - With regard to the material at our disposition, we are not much more fortunate than our predecessors though they described the species only from internal casts: the specimen which we have examined are still more fragmentary than theirs, so that they seem to consist of a smaller number of whorls than the ones figured in d’Archiac and Haime’s work; one of them is more ventricose and conoidal, with sutures more oblique than the two others; but such differences would not justify the separation of a species or even a variety; moreover, the appearance varies according to the age and state of preservation of the specimens. None of the eocene species of Europe have such a distended spire as T. distortum; the slender and polygyrate outline of its spire is quite characteristic.”


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