Index generum mammalium: a list of the genera and families of mammals US Department of Agriculture, Division of Biological Survey: North American Fauna, no. 23

Dicerorhinus Gloger, 1841. Name antedated by Didermocerus Brookes, 1828. From greek di- two, keras, horn - from the two nasal horns.

Diceros Gray, 1821. Name preoccupied by Dicerus Lamarck, 1805, a genus of Mollusca (fide Thomas), see Opsiceros Gloger 1841. Diceros from di- two and keras, horns, from the two nasal horns.

Genus Rhinaster Gray, 1862 in Gerrard, Cat.Bones Name preoccupied by Rhinaster, Wagler, 1830, a genus of Insectivora.