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Gryphaeidae 1 species (1 shell)

Phylum      : Mollusca
 Class       : Bivalvia 
  Subclass    : Pteriomorphia 
   Order       : Ostreida 
    Superfamily : Ostreoidea 
     Family      : Gryphaeidae 

Common name : imbricate oyster

Aspect : the outer surface of the shell is covered with flattened thorns and has 9 to 12 angular folds which give the opening a characteristic zigzag shape. Pearly interior

Feeding :

Environment : from East Africa to the Hawaiian Islands, Easter Island

Hyotissa inermis (G. B. Sowerby II, 1871) (Subfamily Pycnodonteinae)

Hyotissa inermis
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