DYPLOMYSTUS dentatus fossil fish from the famous Kemmerer Fossil Beds.  

Eocene Epoch
Paleogene Period
Green River Formation

Fish is 4 1/2  inches long on a 6 1/2 x 3 1/2 inch cream color matrix.  Comes with story card describing how the fish was fossilized.  Fish exhibits outstanding detail.

Specimen in the picture is the specimen you will receive.