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Webster 1913 Edition
Pterosauria
‖
Pterˊo-sau′ri-a
,Noun.
pl.
[NL.]
(Paleon.)
An extinct order of flying reptiles of the Mesozoic age; the pterodactyls; – called also , and .
Pterodactyli
Ornithosauria
☞ The wings were formed, like those of bats, by a leathery expansion of the skin, principally supported by the greatly enlarged outer or “ little” fingers of the hands. The American Cretaceous pterodactyls had no teeth. See
Pteranodontia
, and Pterodactyl
.