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Caseopsis Temporal range: Kungurian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Clade:	†Caseasauria
Family:	†Caseidae
Genus:	†Caseopsis Olson, 1962
Species:	†C. agilis
Binomial name
†Caseopsis agilis Olson, 1962

Caseopsis is an extinct genus of large pelycosaurs that was about 3 metres (10 ft) long. Caseopsis lived in the late Early Permian epoch (Kungurian Age), before the pelycosaurs were replaced by the more advanced therapsids (in the next age). It was a lightly built, agile creature. It may have been possible for this species to outpace and escape large predators such as Dimetrodon.

References

Kungurian life

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↓