Plesiosaur Tooth in matrix

Plesiosaur Tooth in matrixPlesiosaur tooth embedded in its original matrix. Plesiosaurs were marine reptiles that lived in seas across much of the world during the Mesozoic Era, from about 203 to 66 million years ago. They first appeared in the Late Triassic and survived through the Jurassic and Cretaceous. Their fossils have been found worldwide, including in Morocco, where ancient marine deposits have preserved remains of these remarkable reptiles. Although often grouped

offering an intimate and elegant window into the geology of another world

Its massive size and strength allowed it to hunt some of the largest animals of its time

measuring over six inches in length

They stood up to 11 feet tall at the shoulder and weighed up to 6 tons

A shark adapted to specialize on large

Angustidens appears to have been an opportunistic apex predator

Spinosaurus teeth

Some are glossy and jet-black

Its most distinctive feature is its skin

These distinctions are based on skull shape

cutting through prey with ease

Rich in plagioclase feldspar and anorthosite