Also found in: Wikipedia.
Related to Gryphaea: genus Pecten


n.1.(Zool.) A genus of cretaceous fossil shells allied to the oyster.
References in periodicals archive ?
1954 virgiliae * capensis Brachidontes Musculus Millard & Broekhuysen virgiliae * virgiliae 1970 Ostreidae Saccostrea Crassostrea Millard & Broekhuysen cucullata cucullata 1970 Saccostrea Gryphaea Day et al.
He has a large collection of 190 million-years-old Amethyst geode and Ammonite, 144 million years old wood fossils as well as Gryphaea and 190 million years old chambered nautilus.
Ecologie des huitres du Morbihan Ostrea edulis Linne et Gryphaea angulata Lamarck.
The ecology of Mesozoic Gryphaea, Exogyra, and Ilymatogyra (Bivalvia: Mollusca) in a modern ocean.