How far can a dinosaur smell?

A thorough search of dinosaur skeletons adds to the evidence that Tyrannosaurus rex had a deadly sense of smell, as well as the discovery that the earliest known birds were considerably better at smelling out prey than their descendants. It's tough enough to use fossil evidence to figure out how prehistoric animals appeared and moved; judging their senses is much more challenging, and issues regarding dinosaurs' sense of smell have been particularly difficult to answer. Comparing ancient and present analogues that occupy comparable ecological niches can provide some insight, but to truly understand what an extinct species might sense, palaeontologists must examine the creature's olfactory bulb - the portion of the brain dedicated to fragrance.

The legendary predator Tyrannosaurus rex and its cousins possessed among of the most acute senses of smell among all prehistoric dinosaurs, according to a new research. This clever research of 20 species of meat-eating dinosaurs reveals a wide spectrum of scent in these dinosaurs, which might be tied to activities like feeding or activity timing.