Early Tertiary Vertebrate Faunas Big Bend Area Trans-Pecos Texas: Brontotheriidae

Abstract

A new larger species of Sthenodectes is based on two well preserved skulls and other material from the late Bridgerian or early Uintan (middle or late Eocene) of the Agua Fria area in Trans-Pecos Texas. Menodus bakeri Stovall is confirmed from the Porvenir and Little Egypt local faunas (Chadronian) (early Oligocene) of the Vieja area in Trans-Pecos Texas.