Gryphaea
noun
Gry·phaea
grə̇ˈfēə,
grīˈ-
1
: a genus of fossil mollusks related to the oyster but having the left valve arched with an incurved beak and the right valve flat
2
in some classifications : crassostrea
gryphaeoid adjective
ˈgrifēˌȯid
Word History
Etymology
New Latin, from Latin gryphus or gryph-, gryps griffin