By The early twentieth century, the taxonomy of extinct elephants was advanced. In 1942, American palaeontologist Henry Fairfield Osborn's posthumous monograph on the Proboscidea was published, whereby he employed many taxon names that had Beforehand been proposed for mammoth species, which includes replacing Mammuthus with Mammonteus, as he considered the https://www.youtube.com/channel/UCCoZfLHRsYsRsVHqS-CSAWA