Stegotetrabelodon is suggested to have probably evolved from the "tetralophodont
gomphothere"
Tetralophodon. The earliest species
S. emiratus is known from the Late Miocene
Baynunah Formation of the United Arab Emirates on the Arabian Peninsula, dating to around 8-6 million years ago.
S. orbus is known from the Late Miocene-Early Pliocene in East Africa (Kenya, Uganda), spanning from around 7.5 million years ago to possibly as late as 4.2 million years ago. The species
S. syrticus is known from the Sahabi site in Libya, dating to around 6.8–5.3 million years ago, with remains of the species also reported from the Late Miocene of
Calabria in southern Italy, which was likely part of Africa during this time. "
Stegotetrabelodon" maluvalensis from the Late Miocene of Pakistan is now placed in
Stegolophodon, while "
Stegatetrabelodon"
gigantorostris from the Late Miocene of China is now placed in
Tetralophodon. == Description ==