The Nose Knows — Turbinals and the Gorgonopsid Sense of Smell
Like a lot of terrestrial animals, most therapsids probably found their way through their world with their noses. Therapsid predators of the Permian lacked binocular vision and had relatively
poor hearing. However, the internal structure of the gorgonopsid snout tells us that these hunters would have had an acute sense of smell.
The gorgonopsid's nasal cavities were divided into two chambers. The larger of the two was the olfactory chamber. This chamber was lined with cartilaginous turbinals serving to intensify
smells (or, more accurately, those blade-like turbinals served to increase the surface area of the cavity's lining, the olfactory epithelium where the olfactory receptors are located).
Modern mammals also have turbinals, however, the diapsid reptiles do not.
It's far more likely that the hipposaurs attempting to encircle the gorgonopsids' kill (left) were attracted to the scene by smell than to the
sights or sounds of the initial struggle.