Therochelonia

Therochelonia Temporal range: Late Permian–Late Triassic PreꞒ Ꞓ O S D C P T J K Pg N
Life restoration of Cistecephalus Cistecephalus microrhinus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Clade:	Therapsida
Suborder:	† Anomodontia
Clade:	† Dicynodontia
Clade:	† Therochelonia Seeley, 1894
Subgroups
See text.

Therochelonia is a group of dicynodont therapsids. The group was named by British paleontologist Harry Seeley in 1894 and fell into disuse in the following century. Therochelonia was redefined as a node-based clade in 2009. It is defined as the last common ancestor of Cistecephalus microrhinus and Dicynodon lacerticeps , and all of its descendants. ^[1] Below is a simplified cladogram from Kammerer et al. (2011) showing the phylogenetic placement of Therochelonia: ^[2]

Dicynodontia	Eodicynodon Pylaecephalidae Eumantellidae Endothiodontidae Therochelonia Emydopoidea Emydopidae Kingoriidae Cistecephalidae Myosauridae Bidentalia Cryptodontia Rhachiocephalidae Oudenodontidae Geikiidae Dicynodontoidea " Dicynodon " Lystrosauridae Kannemeyeriiformes Shansiodontidae Kannemeyeriidae Stahleckeriidae Dinodontosauridae

References

1. Kammerer, C.F.; Angielczyk, K.D. (2009). "A proposed higher taxonomy of anomodont therapsids" (PDF). Zootaxa. 2018: 1–24.
2. Kammerer, C.F.; Angielczyk, K.D.; Fröbisch, J. (2011). "A comprehensive taxonomic revision of Dicynodon (Therapsida, Anomodontia) and its implications for dicynodont phylogeny, biogeography, and biostratigraphy". Journal of Vertebrate Paleontology. 31 (Suppl. 1): 1–158. Bibcode:2011JVPal..31S...1K. doi:10.1080/02724634.2011.627074. S2CID   84987497.