The jaws are largely composed of a melanin-like network, making them highly resistant to abrasion, and each jaw bears a channel and pores for venom release (Moses et al. 2006).
No present-day turtles have teeth; rather, the upper and lower jaws bear keratinous sheaths that fit onto the skull like a pair of false teeth.
He faces down the skeptical news media, a glint of defiance in his eyes, firm resolve in his lower jaw, bear claw and stale coffee on his breath.
So those who remember Ken Norton as so much more than 'the man who broke Ali's jaw' should bear in mind it is preferable to be defined by another man's greatness than to pit your wits against nobody of note and remain ill-defined for all time.
Wuornos has large, circular nostrils, jagged front teeth, patchy, mottled skin, a heavy jaw, and she bears all the marks of a spectacularly awful life as an abused kid, an itinerant prostitute, and a longtime convict.
The teeth and jaws of these ancient rodents bore a striking resemblance to Laonastes.
Semiprofessional leagues have long been fixtures across the continent — as have the American journeymen who come to play in them and, perhaps, forge a trans-Atlantic path to the N.F.L. "It's real football," said John McKeon, 25, a barrel-chested offensive lineman with a square jaw and bear-paw hands.
The jaws may have borne a keratinous sheath.
In this aspect, it resembled the stegosaurids, which also bore primitive teeth and simple jaws.
The jaw clearly belonged to a monotreme, but it bore relatively advanced teeth that vaguely resembled tribosphenic molars.
