Absence of the pollex in Perissodactyla. Bulletin of the AMNH ; v. 37, article 21.

Matthew, William Diller, 1871-1930.2005-10-062005-10-061917http://hdl.handle.net/2246/1342p. 573-577 ; 24 cm.Includes 1 bibliographical reference (p. 573).514223 bytesapplication/pdfen-USQH1 .A4 vol.37, art.21, 1917Perissodactyla -- Anatomy.Perissodactyla, Fossil.Toes.Perissodactyla -- Evolution.Absence of the pollex in Perissodactyla. Bulletin of the AMNH ; v. 37, article 21.text