Synapsida

Thesaurus

Noun

Synapsida - extinct reptiles of the Permian to Jurassic considered ancestral to mammalssubclass Synapsidaclass 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 animalsorder Therapsida, Therapsida - extinct mammal-like reptiles found inhabiting all continents from the mid Permian to late TriassicIctodosauria, order Ictodosauria - extinct reptiles of the later Triassic periodorder Pelycosauria, Pelycosauria - edaphosaurus; dimetrodonclass - (biology) a taxonomic group containing one or more orders

Synapsida

enUK

Synapsida

a subclass of extinct reptiles of the late Carboniferous to middle Jurassic periods. They were the most widely distributed and best-adapted land vertebrates of the late Paleozoic era. Most of the Synapsida were predators, although there were also herbivorous members. It is possible that the higher Synapsida were warm blooded. Numerous remains have been found on all continents except Australia. In the USSR fossils have been found in the northern European part in the Northern Dvina, Middle Volga, and Ural regions. The subclass comprises two orders, Pelycosauria and Therapsida, with about 60families. They are important in explaining the evolution of the higher vertebrates.

REFERENCES

Efremov, I. A. “Fauna nazemnykh pozvonochnykh v permskikh medistykh peschanikakh Zapadnogo Priuraria.” Tr. Paleontologicheskogo in-ta AN SSSR, 1954, vol. 54.
Orlov, lu. A. “Khishchnye deinotsefaly fauny Isheeva.”/6/W., 1958, vol. 72.
Osnovy paleontologii, vol. 12: Zemnovodnye, presmykaiushchiesia i ptitsy. Moscow, 1964.

A. K. ROZHDESTVENSKII

Synapsida

Synapsida

Synapsida

REFERENCES

Synapsida

Synapsida

Synapsida

Synonyms for Synapsida

noun extinct reptiles of the Permian to Jurassic considered ancestral to mammals

Synonyms

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