Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A reptile of the subclass Archosauria, which includes the dinosaurs, pterosaurs, and the modern crocodilians.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any reptile of the taxon Archosauria; includes the extinct dinosaurs, plesiosaurs, pterosaurs and ichthyosaurs and the modern crocodiles

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. extinct reptiles including: dinosaurs; plesiosaurs; pterosaurs; ichthyosaurs; thecodonts

Etymologies

New Latin Archosauria, subclass name : Greek arkhos, ruler + Greek sauros, lizard.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From New Latin Archosauria ("taxonomic division of extinct reptiles"), from ἄρχων (archōn, "leader") + σαύρα (saura, "lizard") (Wiktionary)

Examples

  • I also read more of the December issue of the Journal of Vertebrate Paleontology — "Comparison and biomechanical interpretations of the vertebrae and osteoderms of Cacops aspidephorus and Dissorophus multicinctus (Temnospondyli; Dissorophoridae)," and "A possible new ctenosauriscid archosaur from the Middle Triassic Manda Beds of Tanzania."

    What I Did During My Plague Vacation ( by Me)

  • Pterosaurs are in fact a sister group of crocodilians and dinosaurs (including birds) in the archosaur clade.

    Darwinopterus, the New Flying Reptile » E-Mail

  • And there's been more from the latest Journal of Vertebrate Paleontology, papers on the "rauisuchian" archosaur Batrachotomus kupferzellensis; the ontogeny of Stegosaurus; ontogenetic and taxonomic implications of pattern and transition of surficial bone texture of the centrosaurine frill; and Adeopapposaurus, a new prosauropod dinosaur from Argentina.

    "Fill the night with stories. The legend grows."

  • Among the remnants are rare fragments of land life that survived the same period, including part of a conifer plant and the tooth of an archosaur reptile.

    Fossil hunters uncover complete 252m year-old underwater world

  • In the June issue of the Journal of Vertebrate Paleontology, which I'm only just now getting around to, I read the type description of the new species of "rauisuchid" archosaur Postosuchus alisonae from the Triassic of North Carolina.

    At Least I'm Not At Dragon*Con (Part One)

  • I may have to send this news article to school with her: investigators have found that a mutation in chickens causes them to develop teeth—and the teeth resemble those of the common ancestor of alligators and chickens, an archosaur.

    Chicken, archosaur...same difference - The Panda's Thumb

  • I may have to send this news article to school with her: investigators have found that a mutation in chickens causes them to develop teeth—and the teeth resemble those of the common ancestor of alligators and chickens, an archosaur.

    Chicken, archosaur...same difference - The Panda's Thumb

  • Continue reading "Chicken, archosaur...same difference" on Pharyngula

    Chicken, archosaur...same difference - The Panda's Thumb

  • Chicken, archosaur...same difference - The Panda's Thumb

    Chicken, archosaur...same difference - The Panda's Thumb

  • The coin depicted the start of the continental drift of Gondwana and also portrays euphrkeri, an archosaur (a reptile of a large group including the crocodilians, together with the extinct dinosaurs and pterosaurs), belonging to the ancestral group of animals from which dinosaurs and bears evolved.

    ANC Daily News Briefing

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Comments

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  • Crocodilians and birds are living descendants of archosaurs. Others went extinct about 195 million years ago (according to Wikipedia).

    September 1, 2008