What is the meaning of Ptilopteri?

(n.pl.) An order of birds including only the penguins.
Webster's Revised Unabridged Dictionary
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APAWebster's. (2011). ptilopteri. Retrieved September 22, 2026, from http://smartdefine.org/ptilopteri/definitions/2050643
ChicagoWebster's. 2011. "ptilopteri" http://smartdefine.org/ptilopteri/definitions/2050643 (accessed September 22, 2026).
HarvardWebster's 2011, ptilopteri, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/ptilopteri/definitions/2050643>.
MLAWebster's. "ptilopteri" 27 May 2011. Web. 22 September 2026. <http://smartdefine.org/ptilopteri/definitions/2050643>