77041 - Top Beautiful 0.81'' Pterosaur (Coloborhynchus) Tooth Cretaceous KemKem Study The shelly fossil record shows

The shelly fossil record shows a well-recognized pattern of macroevolutionary stasis between the Cambrian Explosion and the Great Ordovician Biodiversification Event

Very didactic piece

the turtle rests in these sites are scarce and rare

Some of them have tiny glued fractures

77041 - Top Beautiful 0.81'' Pterosaur (Coloborhynchus) Tooth Cretaceous KemKem Study The shelly fossil record showsNot restored or glued. The teeth with strong and vivid fossilization colors such as red, orange and black come from small paleochannels composed by thin layers, in the intermediate and upper stratigraphic levels (Red Sandstone Beds), from the Aoufous Formation (Kem Kem Basin, South of Morocco). The lithology of this body of sediment is characterized by the dominance of sandstones (also known as arenites) and fluvial gravel, of siliceous nature.