You can really sink your teeth into this Thursday's Speakers Series lecture at the Royal Tyrrell Museum of Paleontology. Derek Larsen
 
Derek Larson comes to the valley from the Phillip J. Currie Dinosaur Museum near Grande Prairie to talk about theropod, or meat eating dinosaurs.
 
"Everybody's familiar with theropods as the group of meat eating dinosaurs that includes T-rex, Dromeosaurs or the raptors," stated Dr. Francois Therrien of the Tyrrell, who oversees the Speakers Series. 
 
Larson's talk is called 'The Teeth They Are a Changin':The Morphology, Disparity and Evolution of Theropod Teeth in the Late Cretaceous of the Western Interior Basin.'
 
"Just like predators today, they weren't very common and their bones were actually really fragile because they're hollow just like bird bones, so they tend to be destroyed before we discover the nice skeletons," noted Therrien. "The part that lasts for a long time is their teeth."
 
"All the teeth, they look kind of simiilar, but they have small differences that allow you to say you're dealing with different species," he explained. "He (Larson) is going to look at the diversity of meat eating dinosaurs for the last 18 million years of the Age of Dinosaurs."
 
As with all of the series lectures, this week's gets underway at 11:00 a.m. in the Tyrrell auditorium and lasts for about an hour. Admission is free.
 

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