Claim: Notiomastodon is an extinct genus of the extinct family Gomphotheriidae, in the kingdom Animalia.
Evidence: Notiomastodon is an extinct proboscidean genus of gomphotheres (a distant relative to modern elephants) endemic to South America from the Pleistocene to the Holocene. Family: †Gomphotheriidae Kingdom: Animalia Gomphotheres are any members of the diverse, extinct taxonomic family Gomphotheriidae.