Article: Spanish Neogene rhinoceroses
Nine genera and fourteen species are recognized among the rhinocerotid remains of the Spanish Miocene and Lower Pliocene. Protaceratherium minutum and Prosantorhinus sp. are reported in Spain for the first time, and the species Alicornops alfambrense has been published recently as a final form in the A simorrense evolutionary lineage. The overall diversity of Rhinocerotidae in the Neogene record of Spain is generally much greater than that of the Equidae. Palaeoclimatic curves for the Spanish Neogene show how rhinoceros diversity depended on the relative humidity and the temperature.