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Webster's 1913 Dictionary
RHYNCHOCEPHALA
Rhyn `cho *ceph "a *
la,
n.
pl.
Etym:
[
NL.
,
fr.
Gr.
(Zoöl.)
Defn:
An
order
of
reptiles
having
biconcave
vertebræ,
immovable
quadrate
bones,
and
many
other
peculiar
osteological characters.
Hatteria
is
the
only
living
genus,
but
numerous
fossil
genera
are
known,
some
of
which
are
among
the
earliest
of
reptiles.
See
Hatteria.
Called
also
Rhynchocephalia.