Sauropterygian Definition

sô-rŏptə-rĭjē-ən
noun
Any of various extinct aquatic reptiles of the group Sauropterygia that flourished during the Mesozoic Era and included the plesiosaurs.
American Heritage

Any extinct lizard of the superorder Sauropterygia.

Wiktionary

Other Word Forms of Sauropterygian

Noun

Singular:
sauropterygian
Plural:
sauropterygians

Origin of Sauropterygian

  • From New Latin Sauropterygia superorder name Greek sauros lizard Greek pterux pterug- wing, flipper pet- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

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sauropterygian