Shark

Otodus tooth

A tooth from Otodus obliquus, an extinct mackerel shark. These are found in the phosphate deposits of the Khouribga Plateau, around 100 miles inland from Casablanca in Morocco. They reached a maximum of perhaps 40 feet long, and would have been among the top predators in the seas of its time.

It's thought Otodus was an early relative of the Carcharocles line.

3.5-4cm