The greater cornua derive from the third pharyngeal arch.
2.
They are connected to the body of the bone by fibrous tissue, and occasionally to the greater cornua by distinct diarthrodial joints, which usually persist throughout life, but occasionally become morphological continuations of it.
3.
From this bone project a pair of thyrohyoid bones ( homologous with the greater cornua in humans ) that are slightly expanded anteriorly and tapper off posteriorly, and another pair of slender and elongated bones, the epihyoid and stylohyoid bones.
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