Exogyra, Print, Exogyra is an extinct genus of fossil marine oysters in the family Gryphaeidae, the foam oysters or honeycomb oysters. These bivalves grew cemented by the more cupped left valve. The right valve is flatter, and the beak is curved to one side. Exogyra lived on solid substrates in warm seas during the Jurassic and Cretaceous periods

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Exogyra, Print, Exogyra is an extinct genus of fossil marine oysters in the family Gryphaeidae, the foam oysters or honeycomb oysters. These bivalves grew cemented by the more cupped left valve. The right valve is flatter, and the beak is curved to one side. Exogyra lived on solid substrates in warm seas during the Jurassic and Cretaceous periods.

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Photo credit: © Artokoloro / Alamy / Afripics
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Keywords: beak, bivalves, cemented, cretaceous, cupped, curved, exogyra, extinct, family, flatter, foam, fossil, genus, grew, gryphaeidae, honeycomb, jurassic, left, lived, marine, oysters, periods, print, seas, side, solid, substrates, valve, warm