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Anomodontia is an extinct group of non-mammalian from the Permian and Triassic periods. By far the most speciose group are the Dicynodont, a clade of beaked, tusked herbivorous.Chinsamy-Turan, A. (2011) Forerunners of Mammals: Radiation - Histology - Biology, p.39. Indiana University Press, . Retrieved May 2012 Anomodonts were very diverse during the Guadalupian, including primitive forms like Anomocephalus and Patranomodon and groups like Venyukovioidea and Dromasauria. Dicynodonts became the most successful and abundant of all herbivores in the Lopingian, filling ecological niches ranging from large browsers down to small burrowers. Few dicynodont families survived the Permian–Triassic extinction event, but one lineage (Kannemeyeriiformes) evolved into large, stocky forms that became dominant terrestrial herbivores right until the Late Triassic, when changing conditions caused them to decline, finally going extinct during the Triassic–Jurassic extinction event.
Cladogram modified from Angielczyk and Kammerer (2017):
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