05614 - Great Collection of 5 Onchopristis numidus Cretaceous Sawfish Rostral Teeth Cretaceous Dinosaur probably due to being exposed

probably due to being exposed on the surface for a long time in a climate as aggressive as Western Sahara

The mineralization is produced in agate

anomalocaridids had been reconstructed with just one row of flaps along each side of the trunk (e

preserved in part of its natural jaw bone

The scanning electron microscopy reveals that the chemical composition of the sample is mostly homogenous native iron (Fig

05614 - Great Collection of 5 Onchopristis numidus Cretaceous Sawfish Rostral Teeth Cretaceous Dinosaur probably due to being exposedGreat collection of 5 specimens. Some of them have glued and tiny filled fractures. Onchopristis is a genus of extinct giant sawfish that lived in the Lower Cretaceous to Upper Cretaceous in North Africa and New Zealand. It had an elongated snout lined laterally with barbed teeth. It is a large sawfish, known from remains throughout North America, North Africa and New Zealand. It was very large, up to 8 m (26. 2 ft) long when fully grown. As with