Dicynodontia

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Dicynodontia

 

a suborder (or superfamily) of fossilized beastlike reptiles. They were widespread at the end of the Permian and the beginning of the Triassic periods. Their size ranged from that of a rat to that of a rhinoceros. The skull was massive, the teeth atrophied except for two tusks or fangs; the jaws had the form of a beak, as in turtles. Probably they were herbivorous. Remains of Dicynodontia have been found on all continents except Australia; they are especially numerous in Upper Permian deposits of South Africa.

REFERENCE

Osnovy paleontologii: Zemnovodnye, presmykaiushchiesia i ptitsy. Moscow, 1964.
References in periodicals archive ?
Among dicynodonts, longitudinal nasofrontal ridges are known in several genera (Lystrosaurus, Van Hoepen 1913; Cluver 1971; Pristerodon, Barry 1967; Kingoria, Kemp 1969).
This feature has been linked to endothermic physiology (Brink 1956; Parrington 1967; McNab 1978), as it permits uninterrupted breathing during mastication, and its presence in dicynodonts has been considered suggestive of endothermy (King 1990).
The nasal cavity of gorgonopsians is much larger than in dicynodonts, but like pelycosaurs and other primitive therapsids, they lack a bony secondary palate.