 In 1796 Georges Cuvier presented a paper on living and fossil elephants comparing skeletal remains of Indian and African elephants to fossils of mammoths and of an animal he would later name mastodon utilizing comparative anatomy.He established for the first time that Indian and African elephants were different species, and that mammoths differed from both and must be extinct.He further concluded that the mastodon was another extinct species that also differed from Indian or African elephants, more so than mammoths.