ammonites
Brontops tyleri Lull 1905 (brontothere)

Mammalia - Perissodactyla - Brontotheriidae

Alternative combinations: Diploclonus tyleri, Megacerops tyleri

Full reference: R. S. Lull. 1905. Megacerops tyleri, a new species of titanothere from the Bad Lands of South Dakota. Journal of Geology 13(5):443-456

Belongs to Brontops according to B. J. Mader 1989

Sister taxa: Brontops amplus, Brontops bicornutus, Brontops brachycephalus, Brontops dispar, Brontops robustus, Brontops selwynianus

Type specimen: Amherst College Zoological Collection No. 327, a skeleton (mostly complete skeleton). Its type locality is Bear Creek (Middle Titanotherium Beds), which is in a Chadronian fluvial-lacustrine siliciclastic in the Chadron Formation of South Dakota.

Ecology: ground dwelling browser

Average measurements (in mm): femur 785.0 x 117.0, fibula length 395.0, humerus width 85.0, radius 490.0 x 65.0, scapula length 690.0, tibia 446.0 x 80.0, ulna 620.0 x 80.0

Estimated body mass: 571.5 kg based on femur length, tibia length, and ulna length