Pterineidae

Classification
Phylum: Mollusca
Class: Bivalvia
Order: Pterioida
Family: Pterineidae (Miller, 1877)
Cincinnatian Genera: Caritodens

Geologic Range
Ordovician – Upper Permian

Common Paleoecology
Pterineidae is an extinct family of stationary epifaunal suspension feeders

Description of the Family

  • Commonly with small or obsolescent anterior auricles
  • Ligament duplivincular, opisthodetic
  • Heteromyarian or mono-myarian
  • Dentition absent to strong, variable number of small cardinals and commonly posterior laterals diverging from vicinity of beak
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Treatise on Invertebrate Paleontology, Part N, Vol. 1 of 3 (1969):

  • Inequivalve, LV more convex than RV, orbicular to strongly prosocline, pterioid, commonly with small or obsolescent anterior auricles; ligament duplivincular, more or less opisthodetic; heteromyarian or mono-myarian, anterior muscles reinforced in several genera by septum or buttress; dentition absent to strong, actinodont or parallelodont, with variable number of small cardinals and commonly posterior laterals diverging from vicinity of beaks.

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Caritodens