His neck frills snapped back, a sure sign of annoyance.

Dilophosaurus did not have a neck frill, and there is no evidence that it could spit.

Jaw muscles-- all the way up into those neck frills.

However, usage of the neck frill in modern reptiles is better documented.

The Kintarran stared at the dog for a moment, then shrugged his neck frill.

Perhaps we can eat," he said, letting his neck frill droop.

Protoceratops had a large neck frill which was likely used as a display site to impress other members of the species.

They developed elaborate facial horns and a neck frill.

It raised a neck frill as Chalcus lunged forward.

The edge of his neck frill stirred.

Its neck frill and its ability to spit venom are fictitious.

The nasal horn was thick and low, while its neck frill was moderately large.

Speculation continues over the function of the wicked looking horns and grand neck frill...

Diabloceratops was built like a typical ceratopsian in that it had a large neck frill made of bone.

The use of the neck frill in dinosaurs is relatively unknown; it may have been used for thermoregulation or simply as a defense mechanism.

The skull, as restored, features a broad, square, neck frill with two oval shaped openings.

The neck frill is supported by long spines of cartilage which are connected to the jaw bones.

However, Mackal also noted the pygmies did not report a neck frill, which he would have expected on a ceratopsian.

Gahcha lowered his neck frill and squirmed slightly deeper into the warm alluvium.

There was still no sign of the bony neck frill or prominent facial horns which would develop in later ceratopsians.

The chunky lizard lifted its head as they passed, and hissed without lifting its neck frill.

Chasmosaurus The first Chasmosaurus fossil found was part of the neck frill.

As a ceratopsid, Polyonax would have been a large, quadrupedal herbivore, with horns and a neck frill.

Zimgrald's features, with their lizard cast, sharpened; his neck frill arose in a wide fan behind head and shoulders.

Puor shrugged his neck frill.