Species: Archaeocidaris Sp.
County: Jack
Site: Jacksboro
Group: Cisco
Formation: GrahamThrifty
Member: Finnis Shale
Period: Pennsylvanian
Epoch: U
Stage: Virgilian
Class: Echinoidea
Order: Cidaroida
Superfamily: None
Family: Archaeocidaridae
Genus: Archaeocidaris
State: Texas
Credit: mmm
ID: 778