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Book 5, Question 48 · Video

Name Change! Why Do Dinosaur Names Sometimes Change?

Video · 2:05 · Crafty Clover explains, from A Million Whys Book 5

When scientists learn something new, they may update names. A newer fossil might show that two names were really for the same animal, or that an animal belongs in a different group

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What Crafty Clover says in this video

Intro

Hi! I'm Crafty Clover! Let's discover something amazing. Why do names of dinosaurs change sometimes?

The Big Idea

A dinosaur's name is really a scientist's best guess, based on the fossils found so far. When new bones turn up, scientists sometimes learn they made a mistake. Then the name can change. That's science fixing itself! Let's see how.

Step 1

Step one: a first name is given. Scientists name a dinosaur from the fossils they have, even if it's only a few bones. That's their best idea at the time.

Step 2

Step two: new fossils turn up. Sometimes they show that two names belong to one animal. Sometimes they show that one name hides two different animals. The picture gets clearer.

Step 3

Step three: scientists compare, and labels get updated. They write a paper explaining the change, and museums update their signs. Once the evidence is strong, the new name sticks.

A Closer Look

Here's a famous example. Long ago, a scientist named Apatosaurus. Two years later, he named Brontosaurus. Later, scientists decided they were the same animal, so Apatosaurus kept the name. Then in 2015, a big study said Brontosaurus is different after all!

Quick Facts

Quick facts! Two names for one animal is called a synonym, and the older name usually wins. The name Brontosaurus means thunder lizard. Names can change even after many years, when new evidence shows up. That is not a mistake in science. It's how science works, by fixing itself!

Think Like a Scientist

Now, think like a scientist! Play the name game. Imagine you found a new animal, and gave it a name. Later, you find a bone that shows it was two animals. Would you change the name? What evidence would you want?

Outro

A changed name isn't a mistake to hide. It's proof that scientists keep learning as the clues grow! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!

Why I wrote this