The Green River Formation has produced more fish fossils than any other site on the planet! Since its discovery in the 1870s, nearly 1 million fossilized fish have been discovered in these rocks. A dozen fish species, as well as insects, shrimp, frogs, salamanders, alligators, turtles, birds, mammals, and over 325 plant fossils, are often found.

The Green River formation is a geological formation made up of sedimentary rock strata that formed in a vast lake system. The Green River Formation formed between 59 and 33 million years ago, during the Eocene Epoch. It runs across Utah, Wyoming, and Colorado, near the present-day Green River. This article will concentrate on the many species of fish.

The bulk of fish fossils is collected from Fossil Lake in southern Wyoming. This region was divided into two "fossil zones," each of which included well-preserved fossil species. The Split fish layer, which is the most abundant in fish and other fossils, is one such layer.

This stratum is approximately 6 feet deep. The sediment in the split fish layer was strongly laminated, which means it has many easily split layers. It is thicker, and the fish are frequently taken almost whole.

The other stratum was 18 inches thick and included fewer fossils. The nature of the limestone suggests that the layer originated in the deep sea distant from the coast, and it included more plant fossils.

The Green River formation has been home to a variety of fish. However, two separate varieties were identified in abundance in one location. They were known as Diplomystus and Knightia. Paleontologist Edward Drinker Cope, a well-known paleontologist, discovered Diplomystus in 1877.   

David Starr Jordan named Knightia in 1907. Both were species of ray-finned fish, meaning their fins were supported by small bones. They were connected to herrings, alewives, and sardines of today.

The most prevalent fish in the fossil lake region is the Knightia eocaena seen below. It might be the world's most frequent articulated vertebrate fossil!

The second most frequent fossil found in the fossil lake is Diplomystus dentatus. They have been discovered with other fish in their guts or even in the process of eating another fish!

Hiodon falcatus, Mioplosus tabracoides, Phareodus testis, Phareodus encaustus, Notogoneus osculus, Priscacara serrata, Priscacara liops, and Priscacarahypsacantha are among the species.

Buried Treasure Fossils sells a huge variety of high-quality fossil fish. Diplomystus, Mioplosus, Knightia, Phareodus, and Priscacara are among the fossil fish found in the Green River Formation (US). The Green River fish fossils are Eocene age and demonstrate amazing preservation. 

The "divided fish layer" and the "18" inch layer both include outstanding fossil fish fossils from the Green River Fm. There are also fossil fish from Italy and Morocco. Authenticity assured. Check it out.