Aesthetic Large "Diplomystus dentatus" Fossil Fish - Eocene Age from USA - Green River Fm - Fossilised animal

Scientific name: †Diplomystus dentatus - Fossil Fish

Location: Kemmerer, Wyoming, USA

Geological Formation: Green River Formation

Age: Paleogene, Eocene (~48-51 million years)

Size: Plate: 18x12,5x0,7cm - The fish: 16,4cm

Ref: S270

Observations: Beautiful large fossil fish (Diplomystus dentatus species) from the Eocene Age Green River Formation of Wyoming (USA). The specimen is wonderfully detailed, and mainly the head ("skull") its truly well preserved. The specimen is completely natural, however this specimen has been lightly excavated around its outline to make it stand out (highlight). It has also been given a color enhancement treatment to make it more striking, while also serving as a preservation treatment.

Fifty million years ago ancient Fossil Lake existed in what is now southwest Wyoming. The unusual chemistry of fossil lake prevented decay and scavenging of dead organisms while millimeter-thick layers of alternating limestone matter slowly accumulated. The result is laminated limestones that contained the highest concentration of fossil fish in the world.

Since the discovery in the 1870's, many perfectly preserved fossil fish have been recovered. Preserved with the fish in the laminated limestone is a complete aquatic ecosystem: plants, insects, crustaceans, amphibians (frog and primitive salamander), alligators, turtles, birds, mammals, etc

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