X-Nico

2 unusual facts about Zygomatic bone


Lautaro Acosta

In May 2007 he suffered a serious cheekbone injury, and had to wear a specially-fitted face mask for two months.

Zygomatic bone

The malar surface is convex and perforated near its center by a small aperture, the zygomaticofacial foramen, for the passage of the zygomaticofacial nerve and vessels; below this foramen is a slight elevation, which gives origin to the Zygomaticus.


Scutosaurus

As with some species of Pareiasaurus, with which it is clearly related, the quadrato-jugal or cheekbones extend outwards and forwards, makings an angle of about 120° with the maxillary border.With its large cheekbones, Scutosaurus may have been able to make a loud bellowing sound.

Zygomaticofacial foramen

The malar surface of the zygomatic bone is convex and perforated near its center by a small aperture, the zygomaticofacial foramen, for the passage of the zygomaticofacial nerve and vessels; below this foramen is a slight elevation, which gives origin to the Zygomaticus.


see also

Eritherium

The holotype (specimen number MNHN PM69) is now in the Musée d'histoire naturelle - Guimet in Lyon and includes an upper jaw (with approaches of the zygomatic bone and two maxillary branches, each of the two posterior premolars (P3 and 4) and three molars (M1-3)).

Lateral process of the zygomatic bone

The lateral process of the zygomatic bone (or malar) is convex and perforated near its center by a small aperture, the zygomaticofacial foramen, for the passage of the zygomaticofacial nerve and vessels; below this foramen is a slight elevation, which gives origin to the Zygomaticus.