010030 - Nicely Preserved Knightia Fossil Fish Eocene Green River Fm, Wyoming (USA) Tooth The rarity of discovering a

The rarity of discovering a specimen such amazing as this one

Without doubt this is a perfect example of the dentition of the fearsome Otudus obliquus

Many fossil sellers that work with pieces from this area

smooth cutting edges

The size of this fragment of Onchopristis rostral bone is probably only about a third of its original length

010030 - Nicely Preserved Knightia Fossil Fish Eocene Green River Fm, Wyoming (USA) Tooth The rarity of discovering aMagnificent specimen with detailed preservation. You can see the whole bone structure as well as details of the jaw and its small teeth. 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.