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Suborder of stem-mammals
Anomocephalus Otsheria Aulacocephalodon Kannemeyeria Anomodontia is an extinct group of non-mammalian therapsids from the Permian and Triassic periods.[ 1] dicynodonts , a clade of beaked, tusked herbivores .[ 2] Middle Permian , including primitive forms like Anomocephalus Patranomodon Venyukovioidea and Dromasauria . Dicynodonts became the most successful and abundant of all herbivores in the Late Permian , 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 Cisneros et al. , 2015.[ 3]
Cladogram modified from Angielczyk and Kammerer (2017):[ 4]
^ Liu, J.; Rubidge, B.; Li, J. (2009). "A new specimen of Biseridens qilianicus indicates its phylogenetic position as the most basal anomodont" . Proceedings of the Royal Society B . 277 (1679): 285–292. doi :10.1098/rspb.2009.0883 . PMC 2842672 PMID 19640887 . ^ Chinsamy-Turan, A. (2011) Forerunners of Mammals: Radiation - Histology - Biology , p.39. Indiana University Press, ISBN 0253356970 . Retrieved May 2012
^ Cisneros, Juan Carlos; Abdala, Fernando; Jashashvili, Tea; De Oliveira Bueno, Ana; Dentzien-Dias, Paula (2015). "Tiarajudens eccentricus and Anomocephalus africanus , two bizarre anomodonts (Synapsida, Therapsida) with dental occlusion from the Permian of Gondwana" . Royal Society Open Science . 2 (7): 150090. Bibcode :2015RSOS....250090C . doi :10.1098/rsos.150090 . PMC 4632579 PMID 26587266 . S2CID 25503025 . ^ Angielczyk, Kenneth D.; Kammerer, Christian F. (2017). "The cranial morphology, phylogenetic position and biogeography of the upper Permian dicynodont Compsodon helmoedi van Hoepen (Therapsida, Anomodontia)". Papers in Palaeontology . 3 (4): 513–545. doi :10.1002/spp2.1087 . S2CID 134092461 .
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