What is the meaning of Plesiosaurian?

(n.) A plesiosaur.
Webster's Revised Unabridged Dictionary
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APAWebster's. (2011). plesiosaurian. Retrieved September 24, 2026, from http://smartdefine.org/plesiosaurian/definitions/2046456
ChicagoWebster's. 2011. "plesiosaurian" http://smartdefine.org/plesiosaurian/definitions/2046456 (accessed September 24, 2026).
HarvardWebster's 2011, plesiosaurian, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/plesiosaurian/definitions/2046456>.
MLAWebster's. "plesiosaurian" 27 May 2011. Web. 24 September 2026. <http://smartdefine.org/plesiosaurian/definitions/2046456>