sauropterygian

[ saw-rop-tuh-rij-ee-uhn ]
/ sɔˌrɒp təˈrɪdʒ i ən /

noun

any of various Mesozoic marine reptiles of the superorder Sauropterygia, including the suborder Plesiosauria.

adjective

of or relating to a sauropterygian.

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Words nearby sauropterygian

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Scientific definitions for sauropterygian

sauropterygian
[ sô-rŏp′tə-rĭjē-ən ]

Any of various extinct aquatic reptiles of the group Sauropterygia of the Mesozoic Era. Sauropterygians were carnivorous, had paddlelike limbs, and included the plesiosaurs. They were distantly related to the dinosaurs.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.