The head of Raptorex Kriegsteini shows evidence of a well-developed olfactory system.

VOA: special.2009.10.13

Since the space was small and climate-controlled, staffers allowed only small groups in for a few minutes at a time, which was enough to cure most people's olfactory curiosity.

VOA: standard.2010.07.30

In 1986 Kevin Kinsella, a venture capitalist, spotted a neuroscience paper about the olfactory cortex of a rat's brain.

FORBES: Touchy Touchy

Each neuron has a long fiber, or axon, that stretches upward through a tiny opening in the bone above it and into the olfactory bulb, a plum-size mass in the front of the brain, behind the forehead.

FORBES: Magazine Article

Working with rats, Axel and Buck pinpointed 1, 000 types of "olfactory receptors" located in the back of the nose, on a spot called the olfactory epithelium.

FORBES: Magazine Article