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Species / Dimorphosoma Vectiana


Original Description of Dimorphosoma vectiana by Gardner, 1875, p. :

  • "Sehll elongated; whorls 6 or 7, angulated; upper keel replaced by rather produced, elongated tubercles, except on the last whorl; sutural keel smooth and distinct; last whorl with two salient keels, rather close together, the posterior being the more prominent; spiral striae none, except on the dorsal side of the anterior canal; the wing is simple and curved upward, elongate, and narrow; anterior canal moderately long."

Locus typicus: Shanklin, Sandown Bay, Isle of Wight, Isle of Wight County, South East Region, England

Stratum typicum: Folkestone beds of the Lower Greensand, Aptian, lower Cretaceous

Dimorphosoma vectiana Gardner, 1875, pl. XII, fig. 5, 6, 7

  • Gardner, 1875: "Fig. 7 is from a cast only, the shell having broken away; the canal and wing process are, however, well preserved."

History and Synonymy


Casey, 1961 reports Dimorphosoma vectianum from the Deshaysites forbesi zone of the Lower Aptian


  • R. Casey, 1961. The stratigraphical palaeontology of the Lower Greensand; Palaeontology, vol. 3(4), p. 487-621, Fulltext
  • Gardner, 1875

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