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Sphenacodontoidea klada yaka vklyuchaye ostannogo spilnogo predka Sphenacodontidae i Therapsida ta yihnih nashadkiv vklyuchayuchi ssavciv Sfenakodontoyidi harakterizuyutsya ryadom sinapomorfij shodo proporcij kistok cherepa ta zubiv Sfenakodontoyidi evolyucionuvali vid bilsh rannih sfenakodontiv takih yak Haptodus cherez ryad perehidnih stadij malih nespecializovanih pelikozavriv SphenacodontoideaPeriod isnuvannya 300 0 mln r t PreꞒ Ꞓ O S D C P T J K Ꝑ NPensilvanij nash chasSkam yanilij cherep dvoh sfenakodontid Clelandina Therapsida Gorgonopsidae ta Dimetrodon Sphenacodontidae Biologichna klasifikaciyaCarstvo Tvarini Animalia Tip Hordovi Chordata Klada Sinapsidi Synapsida Klada HaptodontiformesKlada SphenacomorphaKlada SphenacodontiaKlada SphenacodontoideaSubgrupi Sphenacodontidae TherapsidaKlasifikaciya red Nastupna taksonomiya vidpovidaye Frobisch et al 2011 ta Benson 2012 1 2 Class Synapsida Sphenacodontoidea Family Sphenacodontidae TherapsidaPrimitki red Jorg Frobisch Rainer R Schoch Johannes Muller Thomas Schindler and Dieter Schweiss 2011 A new basal sphenacodontid synapsid from the Late Carboniferous of the Saar Nahe Basin Germany Acta Palaeontologica Polonica 56 1 113 120 doi 10 4202 app 2010 0039 Arhiv originalu za 22 travnya 2011 Procitovano 14 sichnya 2022 Benson R J 2012 Interrelationships of basal synapsids cranial and postcranial morphological partitions suggest different topologies Journal of Systematic Palaeontology 10 4 601 624 doi 10 1080 14772019 2011 631042 Otrimano z https uk wikipedia org w index php title Sphenacodontoidea amp oldid 35737920