We all know the duck-billed dinosaurs’ massive crests help it smell. But, its actually not so. This has been kicking up debates or decades. But, a U of T researcher has come up with a reply. He has finally determined that the creatures’ massive but hollow crests had nothing to do with what many scientists suspected — the sense of smell.
The crests functioned as everything from brain coolers to snorkels for underwater feeding. Speculation about their function has led to these theories.
David Evans, a PhD student in zoology at the University of Toronto at Mississauga says “From the brain case, there’s no indication that the nerves curled upwards into the crest, as we would expect if the crest was used for the sense of smell… It appears that the brain changed very little from their non-crested dinosaur ancestors, and that the primary region of the sense of smell was located right in front of the eyes — and coincidentally, that’s where it is in birds, crocodiles, mammals and basically all four-legged animals.”
Via: Science Daily