The Collaborative International Dictionary of English v.0.48:
Dermopterygii \Der*mop`te*ryg"i*i\, n. pl. [NL., fr. Gr. ? skin
+ ? wing, fin, dim. of ? wing.] (Zool.)
A group of fishlike animals including the Marsipobranchiata
and Leptocardia.
[1913 Webster]