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CRASSATELLIDAE [1 record]

Record 1 1977-07-07

English

Subject field(s)
  • Paleontology
OBS

[Bivalves of the family Crassatellidae are] subquadrangular to trigonal in outline, rounded in front, more or less truncated posteriorly. [They are] concentrically ribbed to smooth. [An] Internal layer of radial riblets straight and continuous (...). [The] Ligament [is] internal, in [a] pit, which commonly obliterates [the] upper part of tooth 4b; [a] narrowly marginal nymphal ridge [is] behind [the] pit. "Dev. - Rec.".

French

Domaine(s)
  • Paléontologie
OBS

[Les Lamellibranches de la famille des Crassatellidae ont une] coquille équivalve, inéquilatérale, fermée, ornée concentriquement; [une] lunule bien marquée; [un] ligament dans une fossette sous le crochet; [une] charnière comprenant deux cardinales sur la valve droite, trois sur la valve gauche, [les] latérales [sont] généralement peu développées; [la] ligne palléale [est] entière.

Spanish

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