Polistodon

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Polistodon Temporal range: Bajocian/Callovian, 171.6–161.2 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Clade:	Therapsida
Clade:	Cynodontia
Family:	†Tritylodontidae
Genus:	†Polistodon He & Cai, 1984
Species:	†P. chuannanensis
Binomial name
†Polistodon chuannanensis He & Cai, 1984

Polistodon is an extinct genus of tritylodonts from the Bajocian or Callovian (Middle Jurassic) of China.^[1] It contains one species, P. chuannanensis, which is known from a single skull from the Xiashaximiao Formation.^[1] According to one study, it may be a species of the genus Stereognathus.^[2]

References

^ ^a ^b Fossilworks. "Polistodon." Retrieved from
^ Averianov, A.O.; Martin, T.; Lopatin, A.V.; Schultz, J.A.; Skutschas, P.P.; Rico, S.; Krasnolutskii, S.A. (2017). "A tritylodontid synapsid from the Middle Jurassic of Siberia and the taxonomy of derived tritylodontids". Journal of Vertebrate Paleontology. 37 (5): e1363767. Bibcode:2017JVPal..37E3767A. doi:10.1080/02724634.2017.1363767. S2CID 90249441.

see Synapsida
Cynodontia	see below↓

†Dvinia †Nanocynodon †Madysaurus †Uralocynodon
†Charassognathidae	Abdalodon Charassognathus Nshimbodon
†Procynosuchidae	Procynosuchus Sludica

†Agudotherium †Candelariodon †Charruodon †Lumkuia †Protheriodon †Tessellatia
†Chiniquodontidae	Aleodon Chiniquodon Cromptodon? Riojanodon
†Probainognathidae	Bonacynodon Probainognathus
†Ecteniniidae	Diegocanis Ecteninion Trucidocynodon

†Adelobasileus †Botucaraitherium †Brasilodon †Sinoconodon †Tikiodon
†Tritylodontidae	Bienotherium Bienotheroides Bocatherium Dianzhongia Dinnebitodon Fossiomanus Kayentatherium Lufengia Montirictus Nuurtherium Oligokyphus Polistodon Shartegodon Stereognathus Tritylodon Xenocretosuchus Yuanotherium Yunnanodon
Mammaliaformes	see below↓

Allostaffia? Arboroharamiya Baidabatyr? Butlerodon Cryoharamiya Kermackodon? Maiopatagium Megaconus? Qishou Sharypovoia Shenshou Sineleutherus Vilevolodon Woodeatonia Xianshou Gondwanatheria?
Hahnodontidae?	Cifelliodon Denisodon Hahnodon