Monodon monoceros, 67.25 inch narwhal tusk CUT IN HALF Alamosaurus layers of fine grained limestone

layers of fine grained limestone yield well preserved fossils that offer the world's most complete look at an ancient fresh water lake environment

Another theory suggests that mammoths may have fallen victim to an infectious disease

Taung Child is believed to have been three years-old at the time of its death

which retain the same general appearance and are distinguished by various specific details

Ornatocephalus was a terrestrial lizard with a prehensile tail

Monodon monoceros, 67.25 inch narwhal tusk CUT IN HALF Alamosaurus layers of fine grained limestone67. 25 Inches Long 2 Inches Diameter At Base The 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