9.25" Diplomystus dentatus | Green River Formation | Wyoming fluorescent The Wyoming state fossil

The Wyoming state fossil

so clear you can see through it in places

reflect specialization for rapid swimming and active predation along the margins of the Jurassic Tethys

5" to 1" in length

FeO/MnO = 62)

9.25" Diplomystus dentatus | Green River Formation | Wyoming fluorescent The Wyoming state fossilDiplomystus dentatus Eocene (51. 98 Million Years Ago) Green River Formation, Wyoming, USA In Stone Fossils Private Quarry Plate approx. size: 12. 75" x 11. 5" Diplomystus approx. size: 9. 25" Diplomystus is an extinct genus of freshwater clupeomorph fish distantly related to modern day extant herrings, alewives, and sardines. The genus was first named and described by Edward Drinker Cope in 1877. Ray finned Fish Diplomystus dentatus Order