Diplomystus

Diplomystus.
47 million years old from the Green River Formation in Wyoming, USA.
 
Distantly related to modern-day herrings, Diplomystus is an extinct freshwater and marine fish. Fossils can be found in the United States, Canada, China, Uzbekistan and Lebanon.
 
282g
Matrix 13.7 x 9.6cm approx
Fish 11 x 4.2cm approx