into two and later fuses. A condition where fusion has not taken place, may persist throughout life and is referred to as a metopic suture.

On either side of this suture, about 3 cm. above the supraorbital margin, is a rounded elevation, the frontal eminence (tuber frontale).

These eminences vary in size in different individuals, are occasionally unsymmetrical, and are especially prominent in young skulls; the surface of the bone above them is smooth, and covered by the epicranial aponeurosis.

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