Knightia Humilis Fish Cast Replica

Description

Knightia Humilis Fish Cast Replica measures 6.5×4 inches. The Knightia Humilis Fish Cast Replica is Museum quality polyurethane cast made in USA. Eocene fish of the Green River Formation, Wyoming.

Knightia is an extinct genus of clupeid bony fish that lived in the freshwater lakes and rivers of North America and Asia during the Eocene epoch. 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 the paleontology of the Rocky Mountains.” It is the official state fossil of Wyoming, and the most commonly excavated fossil fish in the world.

As with modern-day clupeids, Knightia spp. likely fed on algae and diatoms, as well as insects and occasionally smaller fish.

In Knightia fish, rows of dorsal and ventral scutes run from the back of the head to the medial fins. They had heavy scales and small conical teeth. Their size varied by species: Knightia eocaena was the longest, growing up to 10 in., though most specimens are no larger than 15 cm. K. alta was shorter and relatively wider, with specimens averaging between 6 and 10 cm.

Additional information

Weight 2 lbs
Dimensions 6. × 4 in
Knightia Humilis Fish Fossil

Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Clupeiformes
Family: Clupeidae
Subfamily: Pellonulinae
Genus: Knightia
Type species: Knightia eocaena
Conservation Status: Extinct

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