Troodon - Episode 36

I Know Dino: The Big Dinosaur Podcast

I KNOW DINO, LLC

Iknowdino, Science, Dinosaurs, Dinosaur Podcast, Earth Sciences, Dinosaur, Natural Sciences, Education

4.7 • 653 Ratings

🗓️ 3 August 2015

⏱️ 27 minutes

🔗️ Recording | iTunes | RSS

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Summary

Dinosaur news, including new study on eight theropod teeth that show special serrations for cutting flesh, Dippy the Diplodocus going on tour in the United Kingdom, 10 dinosaur museums and spots in the United States to visit, and more. Also, dinosaur of the day Troodon formosus, a small theropod, and one of the smartest dinosaurs, originally named based on one tooth.

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Transcript

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0:00.0	This episode is brought to you by K-12-powered schools, tuition-free online accredited public schools for kindergarten through 12th grade.
0:09.7	Go to k-12.com slash IKD to find a tuition-free K-12-powered school near you and enroll now.
0:17.0	Music now. Hello and welcome to I know Dino. I'm Garrett and I'm Sabrina. And today we'll be talking
0:35.7	about Trudon Formosis, as well as dinosaur news.
0:39.8	So first in the news, there was a article published in scientific reports on nature by K.S. Brink,
0:47.5	among others, titled Developmental and Evolutionary Novelty in Serrated Teeth of Theropod Dinosaurs. It describes how they believe serrated teeth of theropod dinosaurs.
0:55.1	It describes how they believe serrated teeth impacted theropod dominance and allowed them to have
1:01.4	a quote, hypercarnivorous diet.
1:04.4	And they described that as feeding on large prey and being able to crush bone.
1:09.5	They also believe that these serrations probably
1:12.3	played a role in how theropods became so widespread. The paper has some excellent pictures of
1:18.6	thin slices of teeth, and we talked about it a little bit. Another episode where we were talking
1:24.7	about the new laser fluorescence technique and how one alternative
1:29.3	was slicing thin pieces of bone and then you can illuminate it and see all sorts of neat
1:34.5	structures and different layers of the bone. And they did the same thing in this case and they used
1:41.7	it to look at the different layers and the structure of the teeth.
1:45.6	And then they compared them to electron microscope images. And it's a really neat way to show
1:50.6	the difference between a lot of the theropod. So what they did is they have the SEM right next
1:56.7	to the thin slice picture, and then they show a bunch of dinosaur teeth all in a row.
2:02.2	So they have a silophysis, an allosaurus, a carcharodontosaurus, a gorgasaurus, and a T-Rex, all in one little group.
2:13.1	And it's cool to see the different types of serrations that they have on the teeth and how they look all close up.
2:18.0	Specifically, they show the different denticle, and I'm doing air quotes that you can't see, sizes.
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