Cockerellites (formerly Priscacara) is an extinct genus of perch from the middle Eocene. It is characterized by a sunfish-like body and its stout dorsal and anal spines.
Formation: Eozän, Green River Formation
Age: 50 million years approx.
Site of the find: Kemmerer, Wyoming, USA
Dimensions: 13,7 x 8,0 cm (fish) 29,5 x 24 cm (slab)