Dicynodont

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Dicynodonts
Temporal range: Permian to Early Cretaceous
Lystrosaurus, one of few genera of dicynodonts that survived the Permian-Triassic extinction event.
Conservation status
Fossil
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Synapsida
Order: Therapsida
Suborder: Anomodontia
Infraorder: Dicynodontia
Owen, 1859

The Dicynodontia are a group of therapsids or mammal-like reptiles. They were small to large herbivorous animals with two tusks, hence their name, which means 'two dog tooth'. They are also the most successful and diverse of the non-mammalian therapsids, with over 70 genera known.