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SYNAPSIDA: THE FIRST "MAMMAL-LIKE REPTILES"

This page features the earliest branches of the synapsid-therapsid-mammalian family tree, including the tiny-brained Caseids, the sail-backed Edaphosaurids and the fearsome Dimetrodon and family.

	Synapsida †Asaphestera
	Synapsida \| Caseasauria \| Eothyrididae †Vaughnictis
	Synapsida \| Caseasauria \| Eothyrididae †Oedaleops
	Synapsida \| Caseasauria \| Eothyrididae †Eothyris
	Synapsida \| Caseasauria \| Caseidae †Eocasea
	Synapsida \| Caseasauria \| Caseidae †Martensius
	Synapsida \| Caseasauria \| Caseidae †Casea
	Synapsida \| Caseasauria \| Caseidae †Oromycter
	Synapsida \| Caseasauria \| Caseidae †Trichasaurus
	Synapsida \| Caseasauria \| Caseidae †Euromycter
	Synapsida \| Caseasauria \| Caseidae †Ennantosaurus
	Synapsida \| Caseasauria \| Caseidae †Angelosaurus
	Synapsida \| Caseasauria \| Caseidae †Alierasaurus
	Synapsida \| Caseasauria \| Caseidae †Cotylorhynchus
	Synapsida \| Eupelycosauria \| Varanopidae †Archaeovenator
	Synapsida \| Eupelycosauria \| Varanopidae †Pyozia
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Mycterosaurinae †Mycterosaurus
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Mesenosaurinae †Cabarzia
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Mesenosaurinae †Mesenosaurus
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Mesenosaurinae \| Afrothyra †Anningia
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Mesenosaurinae \| Afrothyra †Elliotsmithia
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Mesenosaurinae \| Afrothyra †Heleosaurus
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Mesenosaurinae \| Afrothyra †Microvaranops
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Varanodontinae †Varanops
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Varanodontinae †Watongia
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Varanodontinae †Varanodon
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Varanodontinae †Ruthiromia
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Varanodontinae †Aerosaurus
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Varanodontinae †Tambacarnifex
	Synapsida \| Eupelycosauria \| Metopophora \| Ophiacodontidae †Archaeothyris
	Synapsida \| Eupelycosauria \| Metopophora \| Ophiacodontidae †Varanosaurus
	Synapsida \| Eupelycosauria \| Metopophora \| Ophiacodontidae †Ophiacodon
	Synapsida \| Eupelycosauria \| Metopophora \| Ophiacodontidae †Stereophallodon
	Synapsida \| Eupelycosauria \| Metopophora \| Haptodontiformes †Ianthodon
	Synapsida \| Eupelycosauria \| Metopophora \| Haptodontiformes †Milosaurus
	Synapsida \| Eupelycosauria \| Metopophora \| Haptodontiformes †Kenomagnathus
	Synapsida \| Eupelycosauria \| Metopophora \| Edaphosauridae †Ianthasaurus
	Synapsida \| Eupelycosauria \| Metopophora \| Edaphosauridae †Glaucosaurus
	Synapsida \| Eupelycosauria \| Metopophora \| Edaphosauridae †Lupeosaurus
	Synapsida \| Eupelycosauria \| Metopophora \| Edaphosauridae †Edaphosaurus
	Synapsida \| Eupelycosauria \| Metopophora \| Sphenacodontia †Haptodus
	Synapsida \| Eupelycosauria \| Metopophora \| Sphenacodontia †Pantelosaurus
	Synapsida \| Eupelycosauria \| Metopophora \| Sphenacodontia \| Sphenacodontidae †Cutleria
	Synapsida \| Eupelycosauria \| Metopophora \| Sphenacodontia \| Sphenacodontidae †Secodontosaurus
	Synapsida \| Eupelycosauria \| Metopophora \| Sphenacodontia \| Sphenacodontidae †Cryptovenator
	Synapsida \| Eupelycosauria \| Metopophora \| Sphenacodontia \| Sphenacodontidae †Dimetrodon
	Synapsida \| Eupelycosauria \| Metopophora \| Sphenacodontia \| Sphenacodontidae †Sphenacodon
	*THERAPSIDA* Click here to learn more

	Synapsida †Asaphestera
	Synapsida \| Caseasauria \| Eothyrididae †Vaughnictis
	Synapsida \| Caseasauria \| Eothyrididae †Oedaleops
	Synapsida \| Caseasauria \| Eothyrididae †Eothyris
	Synapsida \| Caseasauria \| Caseidae †Eocasea
	Synapsida \| Caseasauria \| Caseidae †Martensius
	Synapsida \| Caseasauria \| Caseidae †Casea
	Synapsida \| Caseasauria \| Caseidae †Oromycter
	Synapsida \| Caseasauria \| Caseidae †Trichasaurus
	Synapsida \| Caseasauria \| Caseidae †Euromycter
	Synapsida \| Caseasauria \| Caseidae †Ennantosaurus
	Synapsida \| Caseasauria \| Caseidae †Angelosaurus
	Synapsida \| Caseasauria \| Caseidae †Alierasaurus
	Synapsida \| Caseasauria \| Caseidae †Cotylorhynchus
	Synapsida \| Eupelycosauria \| Varanopidae †Archaeovenator
	Synapsida \| Eupelycosauria \| Varanopidae †Pyozia
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Mycterosaurinae †Mycterosaurus
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Mesenosaurinae †Cabarzia
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Mesenosaurinae †Mesenosaurus
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Mesenosaurinae \| Afrothyra †Anningia
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Mesenosaurinae \| Afrothyra †Elliotsmithia
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Mesenosaurinae \| Afrothyra †Heleosaurus
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Mesenosaurinae \| Afrothyra †Microvaranops
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Varanodontinae †Varanops
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Varanodontinae †Watongia
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Varanodontinae †Varanodon
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Varanodontinae †Ruthiromia
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Varanodontinae †Aerosaurus
	Synapsida \| Eupelycosauria \| Varanopidae \| Neovaranopsia \| Varanodontinae †Tambacarnifex
	Synapsida \| Eupelycosauria \| Metopophora \| Ophiacodontidae †Archaeothyris
	Synapsida \| Eupelycosauria \| Metopophora \| Ophiacodontidae †Varanosaurus
	Synapsida \| Eupelycosauria \| Metopophora \| Ophiacodontidae †Ophiacodon
	Synapsida \| Eupelycosauria \| Metopophora \| Ophiacodontidae †Stereophallodon
	Synapsida \| Eupelycosauria \| Metopophora \| Haptodontiformes †Ianthodon
	Synapsida \| Eupelycosauria \| Metopophora \| Haptodontiformes †Milosaurus
	Synapsida \| Eupelycosauria \| Metopophora \| Haptodontiformes †Kenomagnathus
	Synapsida \| Eupelycosauria \| Metopophora \| Edaphosauridae †Ianthasaurus
	Synapsida \| Eupelycosauria \| Metopophora \| Edaphosauridae †Glaucosaurus
	Synapsida \| Eupelycosauria \| Metopophora \| Edaphosauridae †Lupeosaurus
	Synapsida \| Eupelycosauria \| Metopophora \| Edaphosauridae †Edaphosaurus
	Synapsida \| Eupelycosauria \| Metopophora \| Sphenacodontia †Haptodus
	Synapsida \| Eupelycosauria \| Metopophora \| Sphenacodontia †Pantelosaurus
	Synapsida \| Eupelycosauria \| Metopophora \| Sphenacodontia \| Sphenacodontidae †Cutleria
	Synapsida \| Eupelycosauria \| Metopophora \| Sphenacodontia \| Sphenacodontidae †Secodontosaurus
	Synapsida \| Eupelycosauria \| Metopophora \| Sphenacodontia \| Sphenacodontidae †Cryptovenator
	Synapsida \| Eupelycosauria \| Metopophora \| Sphenacodontia \| Sphenacodontidae †Dimetrodon
	Synapsida \| Eupelycosauria \| Metopophora \| Sphenacodontia \| Sphenacodontidae †Sphenacodon
	*THERAPSIDA* Click here to learn more

°Arcus°

SYNAPSIDA: THE FIRST "MAMMAL-LIKE REPTILES"

This page features the earliest branches of the synapsid-therapsid-mammalian family tree, including the tiny-brained Caseids, the sail-backed Edaphosaurids and the fearsome Dimetrodon and family.