Synapsida ('fused arch'), utawa theropsida ('rai kéwan'), kelas sato kéwan sing kalebu mamalia lan saliyané amniota urip liyané. Anggota non-mamalia karan reptil mèmper mamalia sajeroning sistematika klasik, nanging karan "mamalia batang" utawa "proto-mammalia" sajeroning terminologi cladistic.

Taksonomi

Classification 
 Series Amniota
 CLASS SYNAPSIDA *
 Order Pelycosauria *
 Suborder Caseasauria
 Suborder Eupelycosauria *
 Family Varanopseidae
 Family Ophiacodontidae
 Family Edaphosauridae
 Family Sphenacodontidae *
 Order Therapsida *
 Suborder Biarmosuchia *
 Suborder Dinocephalia
 Suborder Anomodontia
 Suborder Gorgonopsia
 Suborder Therocephalia
 Suborder Cynodontia *
 Family Probainognathidae
 Superfamily Chiniquodontoidea *
 CLASS MAMMALIA

Filogeni

Cathetan

Réferènsi 
 Benton, Michael J. (2005). Vertebrate Paleontology, 3rd ed. Oxford: Blackwell Science Ltd. ISBN 0-632-05637-1.
 
 Carroll, Robert L. (1988). Vertebrate Paleontology and Evolution. New York: W.H. Freeman & Co. ISBN 0-7167-1822-7.
 
 Hoyt, Donald F. (1997). Synapsid Reptiles. Zoo 138 Vertebrate Zoology Home Page.
 Lambert, David (2001). Dinosaur Encyclopedia. ISBN 0-7894-7935-4.
 Laurin, Michel, and Robert R. Reisz (2007). Synapsida: Mammals and their extinct relatives. Version 6 April 2007. The Tree of Life Web Project.

Wacan

Uga delengen 
 Anapsida
 Diapsida
 Euryapsida
 Pratélan synapsida
 Klasifikasi mamalia
 Mamalia prasajarah
 Paleontology Vertebrata
 Garis waktu evolusi

Pranala njaba 
 Synapsida - Pelycosauria-at Palaeos
 Transitional Vertebrate Fossils-includes description of important transitional genera in the evolutionary sequence linking primitive synapsids to mammals

Pelycosauria
Synapsida
Therapsida