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Rafinesquinidae

rafinesquinidae

Classification
Phylum: Brachiopoda
Class: Strophomenata
Order: Strophomenida
Family: Rafinesquinidae (Schuchert, 1983)
Cincinnatian Genera: Leptaena, Rafinesquina

Geologic Range
Ordovician (Llanvirn) – Carboniferous (Namurian)

Common Paleoecology
Rafinesquinidae is an extinct family of facultatively mobile, epifaunal suspension feeders

Characteristics of the Family

  • ‘D’ shaped
  • Planoconvex to concavoconvex
  • Cardinal process lobes elongate
  • Notothryial platform variable
  • Thinner and smaller than Strophomenidae
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Treatise on Invertebrate Paleontology, Part H, Vol. 2 (2000):

  • Systematics
      Outline usually transverse; cardinal process lobes usually elongate or platelike in shape, entirely discrete throughout ontogeny; notothyrial platform variably developed; socket ridges straight, often thinner, smaller than in the Strophomenidae

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Rafinesquina


Leptaena