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Porosteognathus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Clade:	Therapsida
Clade:	†Therocephalia
Genus:	†Porosteognathus

Porosteognathus is an extinct genus of therocephalian therapsids. Remains have been found at Isheevo in Russia (Republic of Tatarstan). It is known from the Middle Permian.

References

1. Michael J. Benton, Mikhail A. Shishkin, David M. Unwin, and Evgenii N. Kurochkin (2003): The Age of Dinosaurs in Russia and Mongolia, Cambridge University Press ISBN 978-0-521-54582-2
2. Ivakhnenko, M.F. (2011). "Permian and Triassic Therocephals (Eutherapsida) of Eastern Europe". Paleontological Journal. 45: 981–1144.

v t e Therocephalia
Kingdom: Animalia Phylum: Chordata Clade: Synapsida Clade: Therapsida Clade: Eutheriodontia Synapsida see Synapsida Therocephalia see below↓
Therocephalia Therocephalia Gorynychus Porosteognathus Cynodontia? Lycosuchidae Lycosuchus Simorhinella Scylacosauridae Alopecodon Alopecognathus Biarmosuchoides? Eutheriodon Glanosuchus Hyorhynchus Julognathus Koksharovia Maraisaurus Pardosuchus Pristerognathus Scylacosaurus Eutherocephalia Caodeyao Kotelcephalon? Nanictidops Perplexisaurus Purlovia Scylacosuchus? Cynodontia? Chthonosauridae Chthonosaurus Ichibengops Akidnognathidae Akidnognathus Annatherapsidus Cerdosuchoides Euchambersia Jiufengia Moschorhinus Notaelurodon Olivierosuchus Promoschorhynchus Shiguaignathus Zorillodontops Whaitsioidea Ophidostoma Hofmeyriidae Gorochovetzia Hofmeyria Ictidostoma Mirotenthes Whaitsiidae Dalongkoua Ictidochampsa Megawhaitsia Microwhaitsia Moschowhaitsia Theriognathus Viatkosuchus Baurioidea see below↓
Baurioidea Baurioidea Homodontosaurus Icticephalus Ictidodon Ictidodraco Ictidognathus Ictidosuchoides Ictidosuchops Ictidosuchus Jiucaiyuangnathus Macroscelesaurus Malasaurus Muchia Nanictocephalus Polycynodon Rhigosaurus Scalopocephalus Scalopodon Scalopodontes Scalopolacerta Scaloporhinus Scaloposuchus Silphictidoides Silpholestes Yikezhaogia Karenitidae Karenites Mupashi Lycideopidae Choerosaurus Lycideops Tetracynodon Regisauridae Regisaurus Urumchia Bauriamorpha Hazhenia Nothogomphodon Notictoides Ordosiodon Scaloposaurus Ericiolacertidae Ericiolacerta Pedaeosaurus? Silphedosuchus Bauriidae Antecosuchus Bauria Microgomphodon Scalopognathus Traversodontoides
Nomina dubia Alopecorhinus Arnognathus Blattoidealestes Dongusaurus Hyaenasuchus Ictidoparia Ictidosaurus Scymnosaurus Tamboeria Trochorhinus Trochosaurus Trochosuchus
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• Extinct animals of Russia
• Scylacosaurids
• Therocephalia genera
• Fossil taxa described in 1955
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