Huge teeth and a bone-crushing bite enabled a fully-grown Tyrannosaurus rex to hunt and kill extremely dangerous prey. Tyrannosaurus
T. rex was the largest species in the tyrannosaur group and one of the last to evolve, near the end of the Cretaceous. While even larger meat-eaters belonging to other dinosaur groups have now been found, scientists think T. rex had, by far, the most powerful bite of any dinosaur. Its broad skull was made of very tough bones and had deep jaws with massive banana-shaped teeth to withstand such bone-crushing bite force. These features, as well as a strong neck and forward facing eyes, indicate T. rex was an active hunter of dangerous prey. Its highly-developed sense of smell suggests this dinosaur also scavenged
© WA Museum
83–72 million years ago, Deinosuchus was the largest predator in North America. Deinosuchus
Deinosuchus riograndensis, an extinct giant relative of alligators, was the undisputed top predator in the rivers and estuaries along the east coast of southern Laramidia — a huge island that formed when the rising sea divided North America into several continental islands. From fossil remains it has been estimated to have grown to about 11 metres in length and weigh 6–7 tonnes, by far exceeding any modern alligator or crocodile. It was twice as heavy as the largest tyrannosaurs of its time and, as suggested by bite marks preserved on fossil bones, it preyed on dinosaurs. At this time there were also smaller-sized Deinosuchus, which may be of a different species, living along the southern and eastern coast of the island called Appalachia. The evidence that this Appalachian population commonly preyed on turtles include bite marks preserved on fossil turtle bones.
© WA Museum
Tiger Cowry (Shell) – Cypraea tigris
The spotted shell of the Tiger Cowry is large and heavy for a sea snail measuring up to 15cm in length. Completely covered by its mantle unless threatened, the surface of the shell is polished and glossy.
© 2015 Western Australian Museum
Cowry, Cypraea, Gastropod, Gold, Marine, Mollusc, Mollusk, Shell, Snail, Tiger, Tigris, White, X Ray