acanthodian

[ ak-uh n-thoh-dee-uh n ]
/ ˌæk ənˈθoʊ di ən /

noun

any small, spiny-finned, sharklike fish of the extinct order Acanthodii, from the Paleozoic Era.

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Origin of acanthodian

1850–55; < New Latin Acanthodi(i) plural of acanthodius (equivalent to Acanthod(es) a genus (< Greek akanthṓdēs prickly, spiny; see acanth-, -ode1) + Latin -ius) + -an
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

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