Mammoth construction of the Great Pyramid of ancient Egypt. The earliest known proboscideans, the clade that contains the elephants, existed about 55 million years ago around the Tethys Sea area. The closest relatives of the Proboscidea are the sirenians and the hyraxes. The family Elephantidae is known to have existed six million years ago in Africa, and includes the living elephants and the mammoths. Among many now extinct clades, the mastodon is only a distant relative of the mammoths, and part of the separate Mammutidae family, which diverged 25 million years before the mammoths evolved. The following cladogram shows the placement
Mastodon (band) melancholy music, which also sounds like the Bee Gees a little bit." On December 1, the band released a revised version of the 12 part "The Making of Emperor of Sand" documentary via their official YouTube channel. Mastodon were announced to be on a co-headlining Summer 2018 Tour with Primus spanning across North America lasting from May to July. Mastodon has been described as a heavy metal band, along with more specific genres such as progressive metal, sludge metal, alternative metal, stoner rock or psychedelic metal, experimental metal, and groove metal. James Christopher Monger of Allmusic describes Mastodon as "one