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ACTINOCERATIDAE [1 record]

Record 1 1977-07-12

English

Subject field(s)
  • Paleontology
OBS

[Cephalopods of the family Actinoceratidae have] Large, straight shells with [a] blunt apex; [the] sutures [are] straight or only slightly sinuous. [The] Siphuncle [is] large, [the] segments [are] strongly expanded between [the] septa; [the] septal necks [are] long, [the] brims wide, endosiphuncular canals [are] well developed, generally of [the] curved type, [the] remainder of [the] endosiphuncle [is] calcified at maturity. Cameral deposits [are] common, generally consisting of episeptal and hyposeptal deposits and in some conchs of circulus. "M.Ord.-L.Sil.".

French

Domaine(s)
  • Paléontologie
OBS

[Les Céphalopodes de la famille des Actinoceratidae ont des] Cols recourbés, mais non coalescents.

Spanish

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