Chasicotherium
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| Chasicotherium rothi Ameghino, 1887 |
Chasicotherium rothi was a “Notoungulate” of great size discovered in the Chasico formation, in the stream homónimo of the Party of Villarino, Province of Buenos Aires, sediments which have an antiquity between 10 and 9 million years. It was an herbivore that preferred dry and open atmospheres. Like the Toxodon and the Trigodon, certain similarity with the hippotamus and rhinoceros exists in its build, both animals of which are without any actual relation. This phenomenon is known like “adaptive convergence or parallel evolution”, that is to say, species that never had contact to each other, and his similarity is the turn out to adapt to very similar atmospheres and to cover equal ecological niches. Most notable of Chasicotherium was its trait that, instead of having ungulates' phalanges or hooves in his legs, it had robust claws. Its weight was approximately one ton. It was a great herbivore of the Tertiary Pampan.
