Species: Idonearca?
County: Williamson
Site: _Williamson 1 (Jonah)
Group: Austin
Formation: Austin Chalk
Member: Jonah
Period: Cretaceous
Epoch: Upper K
Stage: Santonian Coniacian
Class: Bivalvia
Order: Arcida
Superfamily: None
Family: Cucullaeidae
Genus: Idonearca
State: Texas
Credit: mmm
ID: 673