Page "Pterosaur" Paragraph 16

Most pterosaur skulls had elongated jaws with a full complement of needle-like teeth.

In some cases, fossilized keratinous beak tissue has been preserved, though in toothed forms, the beak is small and restricted to the jaw tips and does not involve the teeth.

Some advanced beaked forms were toothless, such as the pteranodonts and azhdarchids, and had larger, more extensive, and more bird-like beaks.