Definitions

from The Century Dictionary and Cyclopedia

  • A name introduced by Cope to distinguish those orders of reptiles which have two temporal arches, the Rhynchocephalia, Crocodilia, Dinosauria, and Pterosauria.

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

  • n. a large subclass of diapsid reptiles including: crocodiles; alligators; dinosaurs; pterosaurs; plesiosaurs; ichthyosaurs; thecodonts

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