Archosauria


Also found in: Thesaurus, Encyclopedia.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Archosauria - a large subclass of diapsid reptiles including: crocodilesArchosauria - a large subclass of diapsid reptiles including: crocodiles; alligators; dinosaurs; pterosaurs; plesiosaurs; ichthyosaurs; thecodonts
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
archosaur, archosaurian, archosaurian reptile - extinct reptiles including: dinosaurs; plesiosaurs; pterosaurs; ichthyosaurs; thecodonts
genus Saurosuchus, Saurosuchus - early archosaurian carnivore
genus Proterochampsa, Proterochampsa - early archosaurian carnivore
Crocodilia, Crocodylia, order Crocodilia, order Crocodylia - crocodiles; alligators; caimans; gavials
order Ornithischia, Ornithischia - extinct terrestrial reptiles having bird-like pelvises: armored dinosaurs (thyreophorans); boneheaded and horned dinosaurs (marginocephalians); duck-billed dinosaurs (euronithopods)
order Saurischia, Saurischia - extinct terrestrial reptiles: theropods (carnivorous); sauropods (herbivorous)
order Pterosauria, Pterosauria - extinct flying reptiles: pterosaurs
order Thecodontia, Thecodontia - extinct terrestrial reptiles having teeth set in sockets; of the late Permian to Triassic
Ichthyosauria, order Ichthyosauria - extinct marine reptiles: ichthyosaurs
order Sauropterygia, Sauropterygia - extinct marine reptiles: plesiosaurs; nothosaurs
class - (biology) a taxonomic group containing one or more orders
References in periodicals archive ?
Phytosaurs were long considered early crocodile-line archosaurs but Nesbitt (2011) recently placed them outside crown-group Archosauria.
The absence of claws on digits IV and V of both manus and pes may represent synapomorphies at some level within the Archosauria, perhaps at the level of Pseudosuchia to the exclusion of Phytosauria.