The tympanic bulla is easily palpated on the skull of a chinchilla. It is located just rostral and medial to the base of the pinna or external ear (Fig. 1). Figure 1: An anesthetized chinchilla in ...

Researchers in Colorado have discovered the fossilized skull of a tiny ... was around the size of a chinchilla and weighed up to 1 pound (455 grams), yet it was part of a group that likely ...