Belongs within: Therapsida.
Contains: Dicynodontia, Cynodontia.
The Eutherapsida are the clade of synapsids uniting modern mammals with the Permian Dinocephalia. Members of the clade are characterised by a bowing of the zygomatic arch and increase in size of the temporal fenestra, together with loss of the olecranon ulnae and reduction of the fifth pedal digit to three phalanges.
<==Eutherapsida [Anomodontia, Cryptodontia] S03
| i. s.: Theriognathus Broom 1920 C07, D07
| `–T. microps D07
| Endothiodon [Endothiodontia] C07
| Dromasauria R61
| |–Galeops R61
| |–Galechirus R61
| `–Galepus R61
|–+–Dicynodontia S03
| `–Theriodontia [Therosauria] S03
| | i. s.: Binaralia C07
| | |–Lycosaurus C07
| | `–Tigrisuchus C07
| | Inostrancevia [Inostranceviidae] C07
| | |–I. annae C07
| | `–I. uralensis Tatarinov 1974 TT05
| | Ericiolacerta Watson 1931 [Ericiolacertidae] D07
| | `–E. parva D07
| |–Gorgonops C07 [Gennetotheria, Gorgonopsia S03, Tectinaralia]
| `–Eutheriodontia HK01
| |–Cynodontia S03
| `–Therocephalia S03
| | i. s.: Lycosuchus HK01
| | Promoschorhynchus S03
| |–Bauria HK01 [Bauriamorpha, Baurioidea K88]
| `–Whaitsiidae K88
`–Dinocephalia S03
| i. s.: Rhopalodon TT05
| Sinophoneus Cheng & Ji 1996 CL97
| Microsyodon orlovi CL97
| Estemmenosuchus Tchudinov 1960 D07 [Estemmenosuchidae TT05]
| |–E. mirabilis D07
| `–E. uralensis D07
|–Stenocybus Cheng & Li 1997 [Stenocybusidae] CL97
| `–*S. acidentatus Cheng & Li 1997 CL97
`–+–Tapinocephalidae [Tapinocephalia, Tretospondylia] CL97
| |–Tapinocephalus C07
| `–Ulemosaurus Rjabinin 1938 TT05, D07
| |–U. gigas TT05
| `–U. svijagensis D07
`–Anteosauridae [Anteosauria] CL97
|–Titanophoneus adamanteus (Orlov 1958) CL97, TT05
|–Deuterosaurus jubilaei (von Nopcsa 1928) TT05
|–Syodon CL97
|–Australosyodon CL97
`–Anteosaurus Watson 1921 D07
`–A. magnificus D07
*Type species of generic name indicated
REFERENCES
[C07] Case, E. C. 1907. Revision of the Pelycosauria of North America. Carnegie Institute of Washington Publication 55: 1–176, 35 pls.
[CL97] Cheng Z. & Li J. 1997. A new genus of primitive dinocephalian—the third report on Late Permian Dashankou lower tetrapod fauna. Vertebrata PalAsiatica 35 (1): 35–43.
[D07] Dixon, D. 2007. The Complete Illustrated Encyclopedia of Dinosaurs & Prehistoric Creatures. Hermes House: London.
[HK01] Hopson, J. A., & J. W. Kitching. 2001. A probainognathian cynodont from South Africa and the phylogeny of nonmammalian cynodonts. Bulletin of the Museum of Comparative Zoology 156 (1): 5–35.
[K88] Kemp, T. S. 1988. Interrelationships of the Synapsida. In: Benton, M. J. (ed.) The Phylogeny and Classification of the Tetrapods vol. 2. Mammals pp. 1–22. Clarendon Press: Oxford.
[R61] Romer, A. S. 1961. Synapsid evolution and dentition. In: Vandebroek, G. (ed.) International Colloquium on the Evolution of Lower and Non Specialized Mammals. Koninklijke Vlaames Academie voor Wetenschappen, Letteren en Schone Kunsten van Belgie—Klasse der Wetenschapen 1961 (1): 9–56.
[S03] Sidor, C. A. 2003. The naris and palate of Lycaenodon longiceps (Therapsida: Biarmosuchia), with comments on their early evolution in the Therapsida. Journal of Paleontology 77 (5): 977–984.
[TT05] Tverdokhlebov, V. P., G. I. Tverdokhlebova, A. V. Minikh, M. V. Surkov & M. J. Benton. 2005. Upper Permian vertebrates and their sedimentological context in the South Urals, Russia. Earth-Science Reviews 69: 27–77.