Pinacosaurus by Moondawg

Pinacosaurus ("plank lizard") is a genus of medium-sized ankylosaur dinosaurs that lived from the late Santonian to the late Campanian stages of the late Cretaceous period.

Pinacosaurus was a lightly-built, medium-sized ankylosaur with a long skull that reached a length of 5 meters (16 ft) Like all ankylosaurids, it had a bony club at the end of its tail which it used as a defensive weapon against predators such as Tarbosaurus. The most unusual element in the original specimen is the presence of two additional egg-shaped holes, one on top of the other, where the nostrils are normally found. The openings are characteristic of the genus, and the number varies: Godefroit et al. described four in 1999, and in 2003 a juvenile specimen with of five pairs of openings was described.

* Inspired by the Zoo Tek Brains Trust