Gryphaea_arcuata

<i>Gryphaea arcuata</i>

Gryphaea arcuata

Extinct species of bivalve


Gryphaea arcuata is an extinct species of foam oyster, a bivalve mollusc in the family Gryphaeidae from the Early Jurassic of Europe.

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It is commonly referred to in English folklore as the 'devils toenail' due to its supposed resemblance to the devil's 'cloven hoof'.

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