Anomodontia

Anomodontia Temporal range: Middle Permian-Late Triassic, 270–201 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Mounted skeleton of Lystrosaurus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Clade:	Therapsida
Suborder:	†Anomodontia Owen, 1859
Subgroups
See text

Anomodontia is an extinct group of non-mammalian therapsids from the Permian and Triassic periods.^[1] By far the most speciose group are the dicynodonts, a clade of beaked, tusked herbivores.^[2] Anomodonts were very diverse during the Middle Permian, 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 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.

Classification

Taxonomy

• Order Therapsida
• Suborder Anomodontia
  • Biseridens
  • Patranomodon
  • Clade Anomocephaloidea
    • Anomocephalus
    • Tiarajudens
  • Infraorder Venyukovioidea
    • Otsheria
    • Parasuminia
    • Suminia
    • Ulemica
    • Venyukovia
  • Clade Chainosauria
    • ?Galechirus
    • Galeops
    • Galepus
    • Infraorder Dicynodontia

Phylogeny

Cladogram modified from Cisneros et al., 2015.^[3]

Cladogram modified from Angielczyk and Kammerer (2017):^[4]

See also

• Theriodont
• Dinocephalia
• Biarmosuchians
• Evolution of mammals

References

• v
• t
• e

Synapsida

Kingdom: Animalia Phylum: Chordata Superclass: Tetrapoda Clade: Amniota
Tetrapodomorpha see Tetrapodomorpha Reptiliomorpha see Reptiliomorpha Synapsida see below↓

Synapsida
Synapsida †Eunotosaurus? †Diadectomorpha? †Caseasauria? Eothyrididae Asaphestera? Eothyris Oedaleops Vaughnictis Caseidae Alierasaurus Angelosaurus Arisierpeton Callibrachion Casea Caseoides Caseopsis Cotylorhynchus Datheosaurus Ennatosaurus Eocasea Euromycter Lalieudorhynchus Martensius Oromycter Phreatophasma Ruthenosaurus Trichasaurus Eupelycosauria †Varanopidae? Apsisaurus Archaeovenator Ascendonanus Eoscansor Dendromaia Nitosaurus? Pyozia Thrausmosaurus Mesenosaurinae Anningia Cabarzia Elliotsmithia Heleosaurus Mesenosaurus Microvaranops Varanodontinae Aerosaurus Mycterosaurus? Ruthiromia Tambacarnifex Varanops Varanodon Watongia Metopophora see below↓ Incertae sedis †Dimacrodon †Driveria †Gorgodon †Knoxosaurus †Mastersonia †Protoclepsydrops?

Metopophora
†Ophiacodontidae Archaeothyris Baldwinonus Clepsydrops Echinerpeton Ophiacodon Stereophallodon Stereorhachis Varanosaurus Haptodontiformes †Ianthodon †Milosaurus †Edaphosauridae Bohemiclavulus Edaphosaurus Glaucosaurus Gordodon Ianthasaurus Lupeosaurus Melanedaphodon Ramodendron Remigiomontanus Xyrospondylus Sphenacodontia †Cutleria †Haptodus †Hypselohaptodus †Kenomagnathus †Tetraceratops †Palaeohatteriidae Palaeohatteria Pantelosaurus Sphenacodontoidea †Shashajaia †Sphenacodontidae Cryptovenator Ctenorhachis Ctenospondylus Cutleria? Dimetrodon Eosyodon Macromerion Neosaurus Secodontosaurus Sphenacodon Steppesaurus? Tappenosaurus? Tetraceratops? Therapsida see below↓

Therapsida
Therapsida †Raranimus †Biarmosuchia see Biarmosuchia †Dinocephalia see Dinocephalia †Anomodontia see Anomodontia includes dicynodonts †Gorgonopsia see Gorgonopsia Eutheriodontia †Therocephalia see Therocephalia Cynodontia see Cynodontia includes mammals Incertae sedis †Dinosaurus †Kamagorgon †Niaftasuchus

• See also: Pelycosauria
• Phthinosuchia
• Theriodontia
• Category