Lepidosauria

Thesaurus

Noun

Lepidosauria - diapsid reptiles: lizards; snakes; tuatarassubclass Lepidosauriaclass 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 Rhynchocephalia, Rhynchocephalia - tuataras; extinct forms from middle Triassicorder Squamata, Squamata - diapsid reptiles: snakes and lizardsclass - (biology) a taxonomic group containing one or more orders

Lepidosauria

[‚lep·ə·dō′sȯr·ē·ə] (vertebrate zoology) A subclass of reptiles in which the skull structure is characterized by two temporal openings on each side which have reduced bony arcades, and by the lack of an antorbital opening in front of the orbit.

Lepidosauria

a subclass of reptiles, first appearing in the Permian period. Ancient lepidosaurians closely resembled the cotylosaurs, whose descendants they probably are. The skull of lepidosaurians, as in the archosaurians, with which they were previously classified, initially had two temporal arcades; but with the development of a movable articulation of the cranial bones (kinetism), the lower arcade was lost in lizards and both were lost in snakes. Mostly predators, either terrestrial or aquatic, the lepidosaurians comprise the Eosuchia, the Saura, the Serpentes, and a few other groups. Their significance for stratigraphy is small; an exception are the Mosasauridae, giant marine lizards of the late Cretaceous.

REFERENCES

Osnovy paleontologii: zemnovodnye, presmykaiushchiesia i ptitsy. Moscow, 1964.

Lepidosauria

Lepidosauria

Lepidosauria

Lepidosauria

REFERENCES

Lepidosauria

Synonyms for Lepidosauria

noun diapsid reptiles: lizards

Synonyms

Related Words