Eocene Period- C. 50 Million Years Ago

Order to which the fossil belongs: Perciformes
Name of which the family belongs: Percidae

The Mioplosus fish comes from one of the world’s famous Laggerstatten, the Green River Formation in Wyoming, USA. It has many pointy teeth and is believed to have been a voracious predator and a solitary hunter. It distinguishing features include double dorsal fins and a fan-like tail.

A nice example with good definition of the Mioplosus fish on a matrix.

Matrix: 184mm x 139mm length
Mioplosus: 130mm length