Double Fossil Fish (Knightia sp.) - Green River Formation This means it forms with

This means it forms with no true crystal structure

Its name comes from the Greek word γύψος (gypsos)

6 ozFossil Type & Species: Body Fossil in Shale & Elrathia sp

Stone: Obsidian

low temperature hydrothermal veins

Double Fossil Fish (Knightia sp.) - Green River Formation This means it forms withHere is a gorgeous display plate of a natural, non dyed specimen from the Green River Formation. This piece is a little lighter than some of the more recent specimens we have added to our gallery. The dark and light difference between the two individual fish really adds to the uniqueness of this piece. Knightia sp. is an extinct genus of freshwater bony fish that thrived in both North America and Asia during the Eocene Epoch (56 to 33. 9 million years