Monodon monoceros, narwhal tusk Pteranodon presumably adding a degree of

presumably adding a degree of protection to the animal

Acheroraptor is an extinct genus of dromaeosaurid theropod dinosaur known from the Hell Creek Formation of Montana

Perhaps there was only room for one giant predator at a time during the Cretaceous Period

Scientific name: Bothriolepis panderi Location: Morocco Age: Devonian

Meniscoessus is a genus of extinct mammal from the Upper Cretaceous Period of North America

Monodon monoceros, narwhal tusk Pteranodon presumably adding a degree ofThe narwhal, or narwhale (Monodon monoceros), is a medium sized toothed whale and possesses a large "tusk" from a protruding canine tooth. It lives year round in the Arctic waters around Greenland, Canada, and Russia. It is one of two living species of whale in the Monodontidae family, along with the beluga whale. The narwhal males are distinguished by a long, straight, helical tusk, which is an elongated upper left canine. The narwhal was one of many