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Contributor: Nicholas Bongio. Lesson ID: 13059
What do we know about dinosaurs and how do we know it? Study fossils and bones to discover dinosaurs...from what they ate to how big they were to why they resemble the birds of today!
Now, multiply the weight of a polar bear by 15 to get an idea of how heavy the Tyrannosaurus Rex was!
Learn about these gigantic animals that once roamed the earth!
Dinosaurs came in many shapes and sizes, including large dinosaurs the size of a bus and small dinosaurs the size of a house cat. Dinosaurs had varied shapes, diets, habitats, and behaviors.
Watch the video below!
Dinosaurs are closely related to the crocodiles and birds alive today. Crocodiles may seem like a logical conclusion.
Birds are very similar to dinosaurs in many ways. They lay eggs just like reptiles. They have hip bones and other skeletal features that resemble dinosaur fossils, and they have feathers, which have been found on some dinosaur fossils.
The most famous of these fossils is the Archaeopteryx.
Look closely at the Archaeopteryx fossil.
Other dinosaur fossils with feathers have also been found, although this is one of the most bird-like.
If you're digging these dinos, check out the videos found under Additional Resources in the right-hand sidebar!
Now that you have seen the types of dinosaurs that existed let's see if you can categorize some yourself in the Got It? section!
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