Source : Webster's Revised Unabridged Dictionary (1913)

Dermopterygii \Der*mop`te*ryg"i*i\, n. pl. [NL., fr. Gr. ? skin
   + ? wing, fin, dim. of ? wing.] (Zo["o]l.)
   A group of fishlike animals including the Marsipobranchiata
   and Leptocardia.