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Archosauria

Archosauria (archosaurs) Infraclass of diapsid reptiles, including the crocodiles, dinosaurs, pterosaurs, and thecodontians. Thecodontians were ancestral to the other groups and appeared at the base of the Triassic. The term ‘archosaur’ is from the Greek words arkhi (‘chief’ or ‘leading’) and saura (‘lizard’).

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"Archosauria." A Dictionary of Earth Sciences. . Encyclopedia.com. 21 Oct. 2017 <http://www.encyclopedia.com>.

"Archosauria." A Dictionary of Earth Sciences. . Encyclopedia.com. (October 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/archosauria

"Archosauria." A Dictionary of Earth Sciences. . Retrieved October 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/archosauria

Archosauria

Archosauria (class Reptilia) A subclass of diapsid reptiles that includes the orders Crocodilia, Ornithischia, Saurischia, Pterosauria, and Thecodontia. Thecodontians were ancestral to the other groups and appeared at the base of the Triassic. Archosaur is derived from the Greek arkho, to rule, and saura, lizard.

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"Archosauria." A Dictionary of Zoology. . Encyclopedia.com. 21 Oct. 2017 <http://www.encyclopedia.com>.

"Archosauria." A Dictionary of Zoology. . Encyclopedia.com. (October 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/archosauria-0

"Archosauria." A Dictionary of Zoology. . Retrieved October 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/archosauria-0