TY - RPRT TI - Mastritherium (Artiodactyla, Anthracotheriidae) from Wadi Sabya, southwestern Saudi Arabia; an earliest Miocene age for continental rift-valley volcanic deposits of the Red Sea margin AU - Gary T. Madden AU - Dwight Lyman Schmidt AU - Frank C. Whitmore PY - 1983 DO - 10.3133/ofr83488 UR - https://pubs.usgs.gov/publication/ofr83488 ID - ofr83488 ER -