010030 - Nicely Preserved Knightia Fossil Fish Eocene Green River Fm, Wyoming (USA) Tooth It reigned the seas during

It reigned the seas during the Paleocene and the Eocene (60-45 million years ago)

Its flat morphology indicates without doubt that it is a foot claw

a species quite abundant in the phosphate quarries of the Ouled Abdoun Basin

The rarity of discovering a specimen such amazing as this one

010030 - Nicely Preserved Knightia Fossil Fish Eocene Green River Fm, Wyoming (USA) Tooth It reigned the seas duringMagnificent 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.