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Mahogany paper grain — description and returns beneath the overlapping buy card.
The size of this fragment of Onchopristis rostral bone is probably only about a third of its original length
The rarity of discovering a specimen such amazing as this one
Many fossil sellers that work with pieces from this area
Its flat morphology indicates without doubt that it is a foot claw
smooth cutting edges
010030 - Nicely Preserved Knightia Fossil Fish Eocene Green River Fm, Wyoming (USA) Tooth The size of this fragmentMagnificent 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.
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