13020 - Finest Grade Knightia eocaena Fossil Fish Green River Fm WY Eocene Age Perciformes Undoubtedly

Undoubtedly

It has already been confirmed as Carbonaceous Chondrite C3 ungrouped based on isotopic composition

Abbreviation: NWA 12778

Calvo and Salgado 1996

TYPE: Carbonaceous Chondrite C2 Ungrouped

13020 - Finest Grade Knightia eocaena Fossil Fish Green River Fm WY Eocene Age Perciformes UndoubtedlyScientific name: Knightia eocaenaLocation: Kemmerer, WyomingGeological Formation: Green River FmAge: Eocene ( 56 million years)Size: 12cm long Plate: 17,7 x 12,6cmRef: M13 13020Fifty 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