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Related to Synapsida: Diapsids
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Synapsida - extinct reptiles of the Permian to Jurassic considered ancestral to mammals
class Reptilia, Reptilia - class of cold-blooded air-breathing vertebrates with completely ossified skeleton and a body usually covered with scales or horny plates; once the dominant land animals
order Therapsida, Therapsida - extinct mammal-like reptiles found inhabiting all continents from the mid Permian to late Triassic
Ictodosauria, order Ictodosauria - extinct reptiles of the later Triassic period
order Pelycosauria, Pelycosauria - edaphosaurus; dimetrodon
class - (biology) a taxonomic group containing one or more orders
References in periodicals archive ?
Synapsida includes a number of extinct lineages that dominated the communities on land in the Late Permian (260-252 million years ago), as well as living mammals and their direct ancestors.
As in the Tsuji (2006) analysis, Synapsida, Captorhinidae and Mesosauridae were assigned as outgoups when running the parsimony analysis in PAUP.
Evolution of the auditory system in Synapsida ("mammal-like reptiles") as seen in the fossil record.