010028 - Nicely Preserved Knightia Fossil Fish Eocene Green River Fm, Wyoming (USA) Dromaeosaur At the bottom of the

At the bottom of the piece a casting has been made for its greater protection

this specimen presents an additional scientific interest given the classification difficulty

It is a large sawfish

indicated in 2001 that it was a species of Coloborhynchus

not filled

010028 - Nicely Preserved Knightia Fossil Fish Eocene Green River Fm, Wyoming (USA) Dromaeosaur At the bottom of theMagnificent specimen with detailed preservation. You can see the whole bone structure as well as details of the jaw and its small teeth. Part of the digestive system is preserved and visible. From this type of fossilization, through taphonomy, many aspects of the original paleoenvironment can be learned. This type of preservation only occurs under certain very special circumstances, in the bottoms of lakes, with anoxic conditions, for example.