Pterosaur bones – Pteranodon sp.
Late Cretaceous
Niobrara Chalk
ks USA
Riker mount with 9 paper-thin pterosaur bones. Likely from the
skull. Largest is 12mm.

Pterosaur. Rare.

Pteranodon is the most widely-recognized pterosaur of all time but its fragile bones are actually very rare finds. They usually show signs of crushing because all their bones were either thin or thin and hollow like bird bones. You can see how delicate they are in this assortment and marvel at how they remained in identifiable condition to this day.