archosaur
arc·ho·saur
noun
1.
extinct reptiles including: dinosaurs; plesiosaurs; pterosaurs; ichthyosaurs; thecodonts
Origin
From taxonomic name Archosauria (“taxonomic division of extinct reptiles”), from Ancient Greek ἄρχων (árkhōn, “leader”) + σαύρα (saúra, “lizard”).
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Parts
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.