Museum-Quality Green River Fossil Prawn

Bechleja rostrata

Subphylum Crustacea, Class Malacostraca, Order Decapoda, Infraorder Caridea, Family Palaemonidae

Geological Time: Eocene

Size (25.4 mm = 1 inch): Fossil is 80 mm in length (tip of rostrum to tip of telson); on a 115 mm by 125 mm matrix

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

Fossil Code: BGF43

Price: Sold

Bechleja rostrata Fossil PrawnDescription: This 50 million year old, Eocene-Era fossil prawn comes from one of the world's famous Laggerstatten, the Green River Formation in Wyoming. A small portion of the fossils from Green River exhibits such fine preservation. Most fossils offered are various fish, but other fossils are also found, albeit much more rarely. Indeed, members of this species are found only on the order of frequency of the highly-prized stingray Heliobatis.

This prawn has wonderful details present, and represents the finest degree of preservation. Notice that even the annulation of the antennae is evident. Decaopds have a spotty fossil record beyond 30 million years, but Bechleja from the Green River Formation is an exception. There are 3 other members of the genus, all from the Oligocene, found in Germany and Brazil. In 10 years, I have only been able to secure 3 examples of this rare fossil, and this one is without a doubt worthy of the appellation museum-quality.

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