Species: Myalina subquadrata
County: Jack
Site: Jacksboro
Group: Cisco
Formation: GrahamThrifty
Member: Finnis Shale
Period: Pennsylvanian
Epoch: U
Stage: Virgilian
Class: Bivalvia
Order: Pterioida
Superfamily: None
Family: Myalinidae
Genus: Myalina
State: Texas
Credit: mmm
ID: 779
MMM ID: None