Home > Uncategorized > The T-Rex’s Smile Revealed

The T-Rex’s Smile Revealed


I’m sure some of you had that fascination with dinosaurs when you were younger (or still do!) I went through that phase, and for about 7 months had all the names and species memorized, along with time periods and dates of the world they lived on. I still have some of that fascination and awe, and so whenever I run across articles with new information, I just have to read to indulge that part of me.

This article talks about how until only recently, scientists had only varying sizes of the T-Rex tooth, and could only guess at some of the order of the T-Rex smile. Scientists at the University of Alberta have now also discovered that the teeth vary greatly in size AND in the serrated edges of the teeth. These varying edges help to serrate the meat better, and the angles at which they are placed helped to direct the food into the T-Rex’s mouth.

Paleontologists at the University of Alberta analyzed the teeth of the T-Rex and other dinosaurs, and found that it’s the dinosaur with the greatest variation of teeth, both in size and shape. It was concluded that “T-Rex‘s front teeth were designed for gripping and pulling, while the teeth along the side of the jaw punctured and tore flesh, and teeth at the back of T. rex‘s mouth not only did some slicing and dicing, they also forced food to the back of the throat.”

  1. March 5, 2012 at 4:04 am

    I really love this kind of article, because it shows just how little we really know about the world around us. As a lover of dinosaurs myself, information like this is really entertaining. Paleontologists are constantly reworking and revising old theories to fit current data from recovered remains and other fossils, and every time they seem like most of the important facts are set in stone new information like this pops up. It must be both fantastically exciting and terribly humbling to find you don’t know as much as you thought about a subject that is your life’s work. Science would be horribly dull without new discoveries overturning outdated material, and I hope that never changes.

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