Named By: Florentino Ameghino - 1882.
Classification: Chordata, Mammalia, Notoungulata, Typotheria, Interatheriidae.
Species: P. antiquum (type).
Size: 40 centimetres long.
Known locations: South America, particularly Argentina.
Time period: Miocene.
Fossil representation: Several individuals.
Protypotherium might have looked like a long legged rabbit, but it was actually a notoungulate, a group of mammals unrelated to rabbits. The biggest confusion about Protypotherium is regarding its diet since it possesses all forty-four mammalian teeth, yet no real specialisation towards a specific diet. While Protypotherium is usually interpreted as being a browser of vegetation, there is commonplace speculation about how it might have been a scavenger of carrion as well.