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Reiszia Temporal range: middle Permian
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Clade:	Therapsida
Suborder:	†Biarmosuchia
Family:	†Nikkasauridae
Genus:	†Reiszia
Species
Reiszia gubini Ivakhnenko, 2000 Reiszia tippula Ivakhnenko, 2000

Reiszia is an extinct genus of therapsids from European Russia belonging to the family Nikkasauridae.

Taxonomy

Two species are known, Reiszia gubini and R. tippula, both found in middle Permian sediments in the Mezen River Basin of European Russia. R. gubini is known from a partial skull and mandible, while R. tippula is known only from a mandible.^[1]^[2]

References

^ M. F. Ivakhnenko, 2000. The Nikkasauridae-Problematic Primitive Therapsids from the Late Permian of the Mezen Localities. Paleontol. J. 34(Suppl. 2), 179–186.
^ M. F. Ivakhnenko. 2008. Podklass Theromorpha. In M. F. Ivakhnenko and E. N. Kurochkin (eds.), Iskopaemye pozvonotchnye Rossii i sopredel'nykh stran: Iskopaemye reptilii i ptitsy, Tchast' 1 [Fossil vertebrates of Russia and adjacent countries: Fossil reptiles and birds, Part 1], GEOS, Moscow 101-183

Kemp, Thomas Stainforth (2005). The Origin and Evolution of Mammals. ISBN 0-19-850760-7.

Synapsida

Kingdom: Animalia
Phylum: Chordata
Superclass: Tetrapoda
Clade: Amniota

Tetrapodomorpha

- see Tetrapodomorpha

Reptiliomorpha

see Reptiliomorpha
Synapsida	see below↓

Synapsida

†Diadectomorpha?

†Caseasauria?

Eothyrididae	Asaphestera? Eothyris Oedaleops Vaughnictis
Caseidae	Alierasaurus Angelosaurus Arisierpeton Callibrachion Casea Caseoides Caseopsis Cotylorhynchus Datheosaurus Ennatosaurus Eocasea Euromycter Lalieudorhynchus Martensius Oromycter Phreatophasma Ruthenosaurus Trichasaurus

Eupelycosauria

†Varanopidae?

Apsisaurus Archaeovenator Ascendonanus Eoscansor Dendromaia Nitosaurus? Pyozia Thrausmosaurus
Mesenosaurinae	Anningia Cabarzia Elliotsmithia Heleosaurus Mesenosaurus Microvaranops
Varanodontinae	Aerosaurus Mycterosaurus? Ruthiromia Tambacarnifex Varanops Varanodon Watongia

Metopophora

- see below↓

Incertae sedis	†Dimacrodon †Driveria †Gorgodon †Knoxosaurus †Mastersonia †Protoclepsydrops?

Metopophora

†Ophiacodontidae	Archaeothyris Baldwinonus Clepsydrops Echinerpeton Ophiacodon Stereophallodon Stereorhachis Varanosaurus

Haptodontiformes

†Ianthodon †Milosaurus
†Edaphosauridae	Bohemiclavulus Edaphosaurus Glaucosaurus Gordodon Ianthasaurus Lupeosaurus Melanedaphodon Ramodendron Remigiomontanus Xyrospondylus

Sphenacodontia

†Palaeohatteriidae

Palaeohatteria
Pantelosaurus

Sphenacodontoidea

†Shashajaia
†Sphenacodontidae	Cryptovenator Ctenorhachis Ctenospondylus Cutleria? Dimetrodon Eosyodon Macromerion Neosaurus Secodontosaurus Sphenacodon Steppesaurus? Tappenosaurus? Tetraceratops?
Therapsida	see below↓