1) Genus gomphotherium 2) Mammal genus 
Gomphotherium (əm; `Welded Beast`) is an extinct genus of proboscid that evolved in the Early Miocene of North America and lived for about {Mya|13.6-3.6|million years} from 13.650—3.6 Ma. The genus emigrated into Asia, Europe and Africa after a drop in sea level (probably during the Tortonian epoch) allowed them to cross over. It survived int.....
Gomphotherium was a 4-tusked, primitive mastodont that was about 10 ft (3 m) tall. This plant-eater mammal lived during the early Miocene until the early Pliocene (roughlty 24 to 5 million years ago). This elephant-like mammal had a long trunk, relatively small ears, a short tail, and four column-like legs. It had a long lower jaw with two parallel...
[n] - type genus of the Gomphotheriidae
genus Gomphotherium noun type genus of the Gomphotheriidae