Typotheria
Sign in to saveTypotheria is a suborder of the extinct South American native ungulate order Notoungulata. A majority of the members of this clade were superficially similar to lagomorphs and rodents, though this is due to convergence. The clade was named after Typotherium, a synonym of Mesotherium.
Article
4 sectionsContents
- Anatomy
- Diversity
- Classification
- References
Typotheria is a suborder of the extinct South American native ungulate order Notoungulata. A majority of the members of this clade were superficially similar to lagomorphs and rodents, though this is due to convergence. The clade was named after Typotherium, a synonym of Mesotherium.
== Anatomy == Typotheres all possess a clavicle, unlike other notoungulates in Toxodontia. They have narrow phalanges (the bones of the digits) and claw-like nails. Most typotheres had additional auditory chambers, much like the toxodonts. The cheek teeth and incisors tend to be hypsodont, meaning that they bore high crowns, which is indicative that many typotheres ate a diet of tough plants. The dental canal leads to a branch which comes from the mandibular ramus, posteriorly (towards the rear) and on the outer side.