Species: Gryphaea Sp.
County: Williamson
Site: _Williamson 1 (Jonah)
Group: Austin
Formation: Austin Chalk
Member: Jonah
Period: Cretaceous
Epoch: Upper K
Stage: Santonian Coniacian
Class: Bivalvia-Oysters
Order: Ostreida
Superfamily: None
Family: Gryphaeidae
Genus: Gryphaea
State: Texas
Credit: None
ID: 683