"Metamynodon" was first described in 1887 by William Berryman Scott and Henry Fairfield Osborn based on a skull of "M. planifrons" found in the White River Formation.In 1922, paleontologist Clive Forster-Cooper initially described tooth remains from Balochistan, Pakistan as "M. bugtienses" before returning 2 years later and reassigning it to the genus "Paraceratherium".