Huge Mosasaur Tooth in Matrix triceratops marking the end of a

marking the end of a once-thriving group of Paleozoic arthropods

This approach helps researchers understand the fossil's original environment

Fossil footprints of lions

Azurite and malachite can often be found together due to their similar chemical composition

involute shell with a generally smooth or slightly ribbed surface

Huge Mosasaur Tooth in Matrix triceratops marking the end of aFantastic specimen for any collector! Mosasaur tooth approx. 3" long x 2" wide. Matrix approx. 4. 5" x 3" About 80 million years ago, there were large creatures that lived in the ocean called Mosasaurs. These "marine lizards" were powerful swimmers; air breathing predators that once dominated the seas. Mosasaurs are considered one of the Great Marine Reptiles that ruled the oceans during the Cretaceous period. Luckily for us, all Great Marine Reptiles