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RAFINESQUININAE [1 record]

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Record 1 1977-06-27

English

Subject field(s)
  • Paleontology
OBS

[Brachiopods of the] subfamily Rafinesquininae [are] concavo-convex, or rarely resupinate and geniculate, unequally parvicostellate, with [a] small apical foramen and [a] vestigial or resorbed pseudodeltidium; rugae [are] concentric or impersistent posterolaterally. [The] ventral muscle sear [is] subquadrate to subcircular, bounding ridges [that are] weak or absent; [the] notothyrial platform [is] small, [the] cardinalia commonly delicate, [the] trans-muscle weakly defined or absent; shell substance [is] regularly and coarsely pseudopunctate. "M.Ord.-U.Ord.".

French

Domaine(s)
  • Paléontologie
OBS

[Les Brachiopodes de la] sous-famille des Rafinesquininae [ont une] valve ventrale arquée (convexe), et un processus cardinal.

Spanish

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