11/26/11
Date of Article: November 16
Author:Stephen Ornes
Source:http://www.sciencenewsforkids.org/2011/11/dino-teeth-tell-a-traveling-tale/
Dinosaurs that lived in north America migrate seasonally they would leave dry rivers and go search for places were there is large amounts of plants and water. Henry Fricke led the study of the dinosaurs. He thinks that the migrations might help understand how the sauropods got so big. Scientists think that they got so large because they needed big bellies to digest plants. But they think migration had something to do with it. Their size made them immune to small predators. The team compared the oxygen from the teeth. When they drink water it goes through their blood and gets to their teeth, there is a difference between the oxygen in swamp water and river water.
My Opinion
I think this is really cool because I want to know more about dinosaurs and this will help for sure. I wonder if they can do this to T-Rex s because I wonder where they originated. I hope scientists find out a lot more so we can totally understand dinosaurs.
