The hyoid apparatus (fig. 59, C) consists of a median portion, and a pair of cornua.
To the ends of the umbilcus were added knobs (cornua), sometimes gilded or painted a bright color.
The frontes are the edges of the roll, and the cornua are the projecting portions of the two wooden rollers.
In Woodpeckers the cornua are enormously long, and curve over the skull, extending as far forwards as the anterior nares.
This seems to be the natural explanation of the κέρατα, or cornua, mentioned by the ancient writers.
The posterior (thyroid) cornua of the hyoid are remnants of the true arches.
The Hyoid of the dog consists of a transverse median piece, the basi-hyal (fig. 72, 32), from which arise two pairs of cornua.
Pontii Leontii, vs. 26, "Caput ardua rumpunt cornua, et indigenam jaculantur fulminis ignem."
“cornua rupicapris in dorsum adunca, damis in adversum,” says Pliny.
The hyoid arch (fig. 29, A, 2) consists of a pair of cornua, each of which is divided into two halves.
cornu cor·nu (kôr'nōō, -nyōō)
n. pl. cor·nu·a (-nōō-ə, -nyōō-ə)
A part or structure, such as a protuberance, that is composed of a horny substance.