Sinapsidi
Sinapsidi su kladus amniota kojem pripadaju sisari, kao i njihovi izumrli srodnici i prapreci koji su bili su dominantni kopneni kičmenjaci u srednjem i kasnom permu.

Reference

Literatura 
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 Michael J. Benton . Vertebrate Paleontology, Oxford: Blackwell Science Ltd. 
 
 Robert L. Carroll (1988) "Vertebrate Paleontology and Evolution." W. H. Freeman and Company, New York, 
 
 
 Laurin, Michel, and Robert R. Reisz (2007). Synapsida: Mammals and their extinct relatives . Version 6 April 2007. The Tree of Life Web Project.
 
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Spoljašnje veze 
 Aron Ra - "Systematic Classification of Life (episode 15) - Synapsida"
 -{Synapsida - Pelycosauria - at Palaeos}-
 -{Transitional Vertebrate Fossils}-
Sinapsidi su kladus amniota kojem pripadaju sisari , kao i njihovi izumrli srodnici i prapreci koji su bili su dominantni kopneni kičmenjaci u srednjem i kasnom permu . Reference Literatura - { Michael J. Benton \ . Vertebrate Paleontology , Oxford : Blackwell Science Ltd . Robert L . Carroll" Vertebrate Paleontology and Evolution . " W. H . Freeman and Company , New York , Laurin , Michel , and Robert R . Reisz Synapsida : Mammals and their extinct relatives \ . VersionApril The Tree of Life Web Project . }- Spoljašnje veze Aron Ra - " Systematic Classification of Life ( episode- Synapsida " -{ Synapsida - Pelycosauria - at Palaeos }- -{ Transitional Vertebrate Fossils }-