Species: Pseudorthoceras knoxense
County: Jack
Site: Jacksboro
Group: Cisco
Formation: GrahamThrifty
Member: Finnis Shale
Period: Pennsylvanian
Epoch: U
Stage: Virgilian
Class: Cephalopoda
Order: Pseudorthocerida
Superfamily: Orthoceratoids
Family: None
Genus: Pseudorthoceras
State: Texas
Credit: tmc
ID: 524