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Webster 1913 Edition
Rhynchocephala
‖
Rhynˊcho-ceph′a-la
,Noun.
pl.
[NL., fr. Gr.
ῥύγχοσ
snout + κεφαλή
head.] (Zool.)
An order of reptiles having biconcave vertebrae, 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
.