: any of an order (Thecodontia) of Triassic diapsid thecodont reptiles that were presumably on the common ancestral line of the dinosaurs, birds, and crocodiles
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“Thecodont.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thecodont. Accessed 28 Nov. 2024.
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