| 词条 | Therochelonia |
| 释义 |
| taxon = Therochelonia | fossil_range = Late Permian - Early Cretaceous | image = Cistecephalus1DB.jpg | image_caption = Life restoration of Cistecephalus Cistecephalus microrhinus | authority = Seeley, 1894 | subdivision_ranks = Subgroups | subdivision = 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]{{clade| style=font-size:85%;line-height:85% |label1=Dicynodontia |1={{clade |1=Eodicynodon |2={{clade |1=Pylaecephalidae |2={{clade |1=Eumantellidae |2={{clade |1=Endothiodontidae |label2= Therochelonia |2={{clade |label1= Emydopoidea |1={{clade |1=Emydopidae |2={{clade |1=Kingoriidae |2=Cistecephalidae |3=Myosauridae}} }} |label2= Bidentalia |2={{clade |label1= Cryptodontia |1={{clade |1=Rhachiocephalidae |2={{clade |1=Oudenodontidae |2=Geikiidae}} }} |label2= Dicynodontoidea |2={{clade |1="Dicynodon" |2={{clade |1=Lystrosauridae |label2= Kannemeyeriiformes |2={{clade |1=Shansiodontidae |2=Kannemeyeriidae |3=Stahleckeriidae |4=Dinodontosauridae }} }} }} }} }} }} }} }} }} }} References1. ^{{cite journal |last=Kammerer |first=C.F. |author2=Angielczyk, K.D. |year=2009 |title=A proposed higher taxonomy of anomodont therapsids |journal=Zootaxa |volume=2018 |pages=1–24 |url=http://www.mapress.com/zootaxa/2009/f/z02018p024f.pdf}} {{Anomodontia|D.}}{{anomodont-stub}}2. ^{{cite journal |last=Kammerer |first=C.F. |author2=Angielczyk, K.D. |author3= Fröbisch, J. |year=2011 |title=A comprehensive taxonomic revision of Dicynodon (Therapsida, Anomodontia) and its implications for dicynodont phylogeny, biogeography, and biostratigraphy |journal=Journal of Vertebrate Paleontology |volume=31 |issue=Suppl. 1 |pages=1–158 |doi=10.1080/02724634.2011.627074}} 3 : Dicynodonts|Lopingian first appearances|Early Cretaceous extinctions |
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