archosaurian
arc·ho·sau·rian
adjective
1.
of or relating to reptiles of the subclass Archosauria
noun
1.
extinct reptiles including: dinosaurs; plesiosaurs; pterosaurs; ichthyosaurs; thecodonts
Origin
From taxonomic name Archosauria + -n.
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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.