Anomodontia is an

extinct Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and ...

group of non-mammalian therapsids from the

Permian The Permian ( ) is a geologic period and System (stratigraphy), stratigraphic system which spans 47 million years, from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.902 Mya. It is the s ...

and

Triassic The Triassic ( ; sometimes symbolized 🝈) is a geologic period and system which spans 50.5 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.4 Mya. The Triassic is t ...

periods. By far the most speciose group are the dicynodonts, a clade of beaked, tusked herbivores. Anomodonts were very diverse during the Middle Permian, including primitive forms like '' Anomocephalus'' and '' Patranomodon'' and groups like

Venyukovioidea Venyukovioidea is an infraorder of anomodont therapsids related to dicynodonts from the Permian of Russia. They have also been known as Venjukovioidea, as well as by the similar names Venyukoviamorpha or Venjukoviamorpha in literature. This in pa ...

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 The Permian–Triassic extinction event (also known as the P–T extinction event, the Late Permian extinction event, the Latest Permian extinction event, the End-Permian extinction event, and colloquially as the Great Dying,) was an extinction ...

, but one lineage ( Kannemeyeriiformes) evolved into large, stocky forms that became dominant terrestrial herbivores right until the

Late Triassic The Late Triassic is the third and final epoch (geology), epoch of the Triassic geologic time scale, Period in the geologic time scale, spanning the time between annum, Ma and Ma (million years ago). It is preceded by the Middle Triassic Epoch a ...

, when changing conditions caused them to decline, finally going extinct during the

Triassic–Jurassic extinction event The Triassic–Jurassic (Tr-J) extinction event (TJME), often called the end-Triassic extinction, marks the boundary between the Triassic and Jurassic periods, . It represents one of five major extinction events during the Phanerozoic, profoundly ...

Classification

Taxonomy

* Order Therapsida * Suborder Anomodontia ** '' Biseridens'' ** '' Patranomodon'' ** Clade Anomocephaloidea *** '' Anomocephalus'' *** '' Tiarajudens'' ** Infraorder

*** '' Otsheria'' *** '' Parasuminia'' *** ''

Suminia ''Suminia'' is an extinct genus of basal anomodont that lived during the Tatarian age of the late Permian, spanning approximately from 268–252 Ma.Rybczynski N. 2000. Cranial anatomy and phylogenetic position of Suminia getmanovi, a basal anomod ...

'' *** '' Ulemica'' *** '' Venyukovia'' ** Clade Chainosauria *** ?'' Galechirus'' *** '' Galeops'' *** '' Galepus'' *** Infraorder Dicynodontia

Phylogeny

Cladogram modified from Cisneros ''et al.'', 2015. Cladogram modified from Angielczyk and Kammerer (2017):

References

{{Taxonbar, from=Q131803 Guadalupian first appearances Late Triassic extinctions Taxa named by Richard Owen

Classification

Taxonomy

Phylogeny

See also

References