Kingdom Animalia Scientific name Toxodontidae Higher classification Notoungulata Order Notoungulata | Suborder †Toxodonta Phylum Chordata Rank Family | |
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Lower classifications Toxodon, Haplodontheriinae, Nesodontinae | ||
Toxodontidae is an extinct family of notoungulate mammals known from the Oligocene through the Pleistocene of South America, with one genus, Mixotoxodon, also known from the Pleistocene of Central America and southwestern North America (Texas). They somewhat resembled rhinoceroses, and had teeth with high crowns and open roots, suggesting that they often fed on tough pampas grass. However, isotopic analyses have led to the conclusion that the most recent forms were grazing and browsing generalists.
Classification
In 2014, a study identifying a new species of toxodontid resolved the families phylogenetic relations. The below cladogram was found by the study:
References
Toxodontidae Wikipedia(Text) CC BY-SA