Rhinocerotoidea
Superfamily of mammals
Rhinocerotoidea is a superfamily of perissodactyls which includes the living rhinoceroses and their extinct relatives. In addition to rhinoceroses (Rhinocerotidae), Rhinocerotoidea also comprises at least three extinct families: the Amynodontidae, Hyracodontidae, and Paraceratheriidae. The relationships between the different groups are not well resolved, and two additional extinct families are sometimes recognized, the Eggysodontidae and Forstercooperiidae.
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