archosaurian


Also found in: Thesaurus.

ar·cho·saur

 (är′kə-sôr′)
n.
Any of various vertebrates of the group Archosauria, having a single opening in each side of the skull in front of the eye socket, and including the dinosaurs, birds, pterosaurs, and modern crocodilians.

[New Latin Archosauria, subclass name : Greek arkhos, ruler + Greek sauros, lizard.]

ar′cho·saur′i·an n. & adj.

archosaurian

(ˌɑːkəˈsɔːrɪən)
adj
belonging to or characteristic of the archosaurs
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.archosaurian - extinct reptiles including: dinosaursarchosaurian - extinct reptiles including: dinosaurs; plesiosaurs; pterosaurs; ichthyosaurs; thecodonts
diapsid, diapsid reptile - reptile having a pair of openings in the skull behind each eye
Archosauria, subclass Archosauria - a large subclass of diapsid reptiles including: crocodiles; alligators; dinosaurs; pterosaurs; plesiosaurs; ichthyosaurs; thecodonts
dinosaur - any of numerous extinct terrestrial reptiles of the Mesozoic era
flying reptile, pterosaur - an extinct reptile of the Jurassic and Cretaceous having a bird-like beak and membranous wings supported by the very long fourth digit of each forelimb
thecodont, thecodont reptile - presumably in the common ancestral line to dinosaurs and crocodiles and birds
ichthyosaur - any of several marine reptiles of the Mesozoic having a body like a porpoise with dorsal and tail fins and paddle-shaped limbs
plesiosaur, plesiosaurus - extinct marine reptile with a small head on a long neck a short tail and four paddle-shaped limbs; of the Jurassic and Cretaceous
nothosaur - extinct marine reptile with longer more slender limbs than plesiosaurs and less completely modified for swimming
Adj.1.archosaurian - of or relating to reptiles of the subclass Archosauriaarchosaurian - of or relating to reptiles of the subclass Archosauria
References in periodicals archive ?
First finding of epsilon-crystallin outside the archosaurian lineage.
The metriorhynchids are a group of Mesozoic marine crocodylomorphs, the only archosaurian group to return secondarily to a pelagic lifestyle.
Archosaurian reptiles from the Evangeline Member comprise various taxa of crocodile-line archosaurs (Pseudosuchia) (Figs.