Arrhinoceratops

Skull of Arrhinoceratops

• Canada

• A. brachyops Parks, 1925

Arrhinoceratops is a genus of bird Beck dinosaurs from the group of Ceratopsidae within the ceratopsians.

Features

From Arrhinoceratops is so far only a skull excluding the mandible known, but probably true his physique largely consistent with that of the other Ceratopsidae. The muzzle was pointed and parrot beak similar in its mouth sat tooth batteries, which are in rows spaced teeth that are replaced by the following tooth when worn. This dinosaur was like all ceratopsians herbivores, teeth represent an adaptation to hard, fibrous plants

The horn on the nose was very short and blunt, the supraorbital horns were long and slightly bent forward. This typical Ceratopsidae neck shield was formed from the parietal and squamosal, it was elongated and pointed two paired openings. The function of horns and neck shields at the Ceratopsidae is now seen mainly in the contact and interaction with other dogs and less in the defense against predators.

Discovery and designation

The fossil remains of Arrhinoceratops were found in the Horseshoe Canyon Formation in Alberta (Canada) and first described in 1923 by William Parks. The genus name means in Greek " nose -less -horned face " and alludes to the small nose horn at. Type species is A. brachyops. The findings are from the Upper Cretaceous ( Maastrichtian early ) and are about 72 to 69 million years old.

System

Arrhinoceratops is classified within the Ceratopsidae in the Chasmosaurinae, which were characterized by long over eyes horns and a usually long neck shield. His sister taxon should be Anchiceratops.