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Either of two small elongated rectangular bones that together form the bridge of the nose.

These bones are situate beneath the nasal notch of the os frontis, and occupy the space between the nasal or angular processes of the superior maxillary bone. Their shape is nearly quadrilateral. They have an external or cutaneous surface, an internal or nasal, and four margins. Each is articulated with its fellow, with the os frontis, ethmoid, and superior maxillary bones. They ossify from a single point.

The two bones that form the arch of the nose.