Artistically Framed Diplomystus dentatus Fish Fossil

Diplomystus dentatus

Order Ellimmichyiformes, Family Ellimmichthyidae

Geological Time: Eocene

Size (25.4 mm = 1 inch): Fish fossil is 95 mm in length on 120 mm by 80 mm matrix (visible), frame size 235 mm by 185 mm

Fossil Site: Green River Formation, Fossil Lake, Kemmerer, Wyoming

Code: WFF114

Price: Sold

Framed Diplomystus dentatus Fish FossilDescription: This 50 million year old, Eocene-Era fossil fish comes from one of the world's famous Laggerstatten, the Green River Formation in Wyoming. A small portion of the fish fossils from Green River exhibits such fine preservation. The significant extent of soft-tissue preservation that makes the site famous is evident in this specimen.

This fine fish is Diplomystus dentatus. Early workers proposed that this fish was closely related to Knightia, an incorrect assumption, as Diplomystus is not even placed within the same Order. Diplomystus has the body form and mouth placement of a surface feeder, as is thought to have been a predator of smaller surface-feeders such as Knightia. Indeed, specimens of Diplomystus have been found with Knightia in their stomachs or mouths, a classic demonstration of a predator caught by its prey!

This specimen has been attractively matted and framed in oak, with a location label and hanger affixed to the reverse, making an attractive display specimen for the collector, naturalist, or fisherman, and would make a fine gift.

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