Knightia fossil fish (Wyoming, USA)

Knightia is an extinct genus of clupeid clupeiform bony fishes that lived in the freshwater lakes and rivers of North America during the Eocene. The genus was erected by David Starr Jordan in 1907, in honor of the late University of Wyoming professor Wilbur Clinton Knight, "an indefatigable student of Rocky Mountain paleontology." It is the state fossil of Wyoming, and the most frequently excavated fossil fish in the world. .