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Archaeovenator Temporal range: Late Carboniferous, 300 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓

Holotype skeleton
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Family:	†Varanopidae
Genus:	†Archaeovenator Reisz & Dilkes, 2003
Species:	†A. hamiltonensis
Binomial name
†Archaeovenator hamiltonensis Reisz & Dilkes, 2003

Archaeovenator is an extinct genus of Late Carboniferous varanopid synapsids known from Greenwood County, Kansas of the United States. It was first named by Robert R. Reisz and David W. Dilkes in 2003 and the type species is Archaeovenator hamiltonensis. Archaeovenator hamiltonensis is known from the holotype KUVP 12483, a three-dimensionally preserved, nearly complete and articulated skeleton, including the skull, with limbs and girdles slightly separated from postcranial skeleton. It was collected in the Hamilton Quarry, from the Calhouns Shale Formation of the Shawnee Group, dating to the Virgilian stage (or alternatively late Kasimovian to early Gzhelian stage) of the Late Pennsylvanian Series, about 300 million years ago. The generic name is derived from the Latin Archaeo and venator, meaning "ancient hunter". The specific name is named after its finding place Hamilton Quarry.^[1] Archaeovenator is one of the oldest known varanopid,^[1]^[2] though Dendromaia is known from older rocks.^[3]

References

^ ^a ^b Robert R. Reisz and David W. Dilkes (2003). "Archaeovenator hamiltonensis, a new varanopid from the upper carboniferous of Kansas" (PDF). Canadian Journal of Earth Sciences. 40: 667–678. Bibcode:2003CaJES..40..667R. doi:10.1139/E02-063. Archived from the original (PDF) on 2011-05-22.
^ Robert R. Reisz, Michel Laurin and David Marjanovic (2010). "Apsisaurus witteri from the Lower Permian of Texas: yet another small varanopid synapsid, not a diapsid". Journal of Vertebrate Paleontology. 30 (5): 1628–1631. doi:10.1080/02724634.2010.501441.
^ Maddin, Hillary C.; Mann, Arjan; Hebert, Brian (23 December 2019). "Varanopid from the Carboniferous of Nova Scotia reveals evidence of parental care in amniotes". Nature Ecology & Evolution. 4 (1): 50–56. doi:10.1038/s41559-019-1030-z. ISSN 2397-334X. PMID 31900446. S2CID 209672554.

see Reptiliomorpha
Synapsida	see below↓

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

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

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

†Ophiacodontidae	Archaeothyris Baldwinonus Clepsydrops Echinerpeton Ophiacodon Stereophallodon Stereorhachis Varanosaurus

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

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