Mastodon Tusk, Mammut americanium Iguanodon Larvae do not exist as

Larvae do not exist as fossils before the Mesozoic

but lacks important

T-rex was up to 18

and have since been found over most of North America and as far south as Venezuela

Mastodon Tusk, Mammut americanium Iguanodon Larvae do not exist asMastodons 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