Original sentence: Because skeletons of Leptauchenia have been found by the literal thousands (in even greater numbers than the related genus Sespia), it is often quoted as being the most numerous mammal in North America during the Late Oligocene.Leptauchenia ("Delicate Neck") was a genus of small, goat-like oreodonts with proportionally big heads found throughout North America during the Late Oligocene
Edited sentence: A single specimen was examined by M.Leptauchenia ("Delicate Neck") is an extinct goat-like (oreodont) genus of terrestrial herbivore of the family Merycoidodontidae, tribe Leptaucheniini, endemic to North America during the Late Oligocene subepoch (33.9—16.3 mya) existing for approximately.Mendoza for body mass and estimated to have a weight of 39.3 kg (86.6 lbs).Skeletons of Leptauchenia have been found by the literal thousands (in even greater numbers than the related genus Sespia), it is often quoted as being the most numerous mammal in North America during the Late Oligocene