翼龙目

[ noun ]
extinct flying reptiles: pterosaurs
<noun.animal>

Ornithosauria \Or*ni`tho*sau"ri*a\, prop. n. pl. [NL. See
{Ornitho-}, and {Sauria}.] (Paleon.)
An order of extinct flying reptiles; -- called also
{{Pterosauria}}.


Pterosauria \Pter`o*sau"ri*a\, n. pl. [NL.] (Paleon.)
An extinct order of flying reptiles of the Mesozoic age; the
pterodactyls; -- called also {{Pterodactyli}}, and
{{Ornithosauria}}.

Note: 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}.