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Webster's 1913 Dictionary
ALLANTOIDEA
Al
`
lan
*toid "e *a, n.
pl.
Etym:
[
NL.
] (Zoöl.)
Defn:
The
division
of
Vertebrata
in
which
the
embryo
develops
an
allantois.
It
includes reptiles, birds,
and
mammals.
The Wordsmith Dictionary
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