Family Cucullaeidae - cucullaeid ark shells

  Order
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  Class
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Bivalvia
  No. of Genera in Ref.
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  No. of Species in Ref.
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  Environment
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Fresh : No | Brackish : No | Marine : No
  Aquarium
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  First Fossil Record
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  Remark
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Shell inflated, inequilateral, slightly inequivalve. Umbones subcentral, on top of a trigonal cardinal area with chevron-shaped grooves and external ligament. Hinge elongate, straightish, with a series of transverse teeth, and subhorizontal teeth at both ends. Two subequal adductor muscle scars, inner margin of posterior scar on a projecting shelf. Pallial line without a sinus (Ref. 348).
  Etymology
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  Division
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  Reproductive guild
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  Typical activity level
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  Main Ref.
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  Coordinator
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Show species | Nominal species list for Cucullaeidae | Specimen photos | References

Ref.
[ e.g. 9948]                       
Glossary
                    [ e.g. cephalopods]