Mastodon Tusk, Mammut americanium Iguanodon T-rex was up to 18

T-rex was up to 18

Early Eocene (40 m

in contrast to living elephants that are mostly grazing animals

3 m) long and 13

Larvae do not exist as fossils before the Mesozoic

Mastodon Tusk, Mammut americanium Iguanodon T-rex was up to 18Mastodons are any species of extinct proboscideans in the genus Mammut, distantly related to elephants that inhabited North and Central America during the late Miocene or late Pliocene up to their extinction at the end of the Pleistocene 10,000 to 11,000 years ago. Mastodons lived in herds and were predominantly forest dwelling animals that fed on a mixed diet of browsing and grazing with a seasonal preference for browsing, in contrast to living