Emydopoidea

Extinct superfamily of dicynodonts

Emydopoidea Temporal range: Late Permian - Middle Triassic

Restoration of the emydopoid Myosaurus gracilis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Clade:	Therapsida
Suborder:	†Anomodontia
Clade:	†Dicynodontia
Clade:	†Therochelonia
Superfamily:	†Emydopoidea Cluver and King, 1983
Subgroups
Digalodon Rastodon Thliptosaurus Cistecephalidae Emydopidae Kingoriidae Myosauridae

Emydopoidea is a group of Late Permian dicynodont therapsids. It includes the small-bodied Emydops, Myosaurus, and kingoriids, and the burrowing cistecephalids.^[1]

Phylogeny

Below is a cladogram modified from Macungo et al. (2022) showing the phylogenetic relationships of emydopoids:^[2]

Emydopoidea

Rastodon

Kingoriidae

	Dicynodontoides

	Kombuisia

Thliptosaurus

Digalodon

Emydopidae

	Compsodon

	Emydops

	Cistecephaloides

	Kawingasaurus

References

^ Kammerer, C.F.; Angielczyk, K.D. (2009). "A proposed higher taxonomy of anomodont therapsids" (PDF). Zootaxa. 2018: 1–24.
^ MacUngo, Zanildo; Benoit, Julien; Fernandez, Vincent; Araújo, Ricardo M N. (2023). "X-ray microcomputed and synchrotron tomographic analysis of the basicranial axis of emydopoid dicynodonts: Implications for fossoriality and phylogeny". Zoological Journal of the Linnean Society. 198: 1–46. doi:10.1093/zoolinnean/zlac033.

Anomodontia

Kingdom: Animalia
Phylum: Chordata
Clade: Synapsida
Clade: Therapsida

Synapsida

see Synapsida
Anomodontia	see below↓

Anomodontia

Biseridens
Novocynodon?

Anomocephaloidea

Anomocephalus
Tiarajudens

Venyukovioidea

Chainosauria

Galechirus Galeops Galepus Patranomodon Anomocephaloidea?
Dicynodontia	see below↓

Dicynodontia

Pylaecephalidae

Endothiodontia

Abajudon
Endothiodon
Niassodon

Therochelonia

Emydopoidea

Digalodon Emydorhinus? Palemydops?
Emydopidae	Compsodon Emydops
Myosauridae	Myosauroides Myosaurus
Kingoriidae	Dicynodontoides Kombuisia Thliptosaurus
Cistecephalidae	Cistecephaloides Cistecephalus Kawingasaurus Kembawacela Sauroscaptor

Bidentalia

- see below↓

Oudenodontidae

Kitchinganomodon
Rhachiocephalus

Dicynodontoidea

Counillonia Daptocephalus Delectosaurus Dicynodon Dinanomodon Gordonia Kunpania Peramodon Repelinosaurus Taoheodon Turfanodon Vivaxosaurus
Lystrosauridae	Basilodon? Euptychognathus? Jimusaria? Kwazulusaurus Lystrosaurus Sintocephalus?
Kannemeyeriiformes	see below↓

Sungeodon
Placeriinae	Argodicynodon Lisowicia Moghreberia Pentasaurus Placerias Zambiasaurus
Stahleckeriinae	Eubrachiosaurus Ischigualastia Jachaleria Sangusaurus Stahleckeria Ufudocyclops