What matters to you.
0:00
0:00
NEXT UP:

Episode 20, Season 4<br> How Vertebrates Got Teeth... And Lost Them Again

Season 4 Episode 20

About the Episode

As revolutionary as teeth were, they would go on to disappear in some groups of vertebrates. But why?

Aired: 02/07/22 | Expires: | Runtime: 8m 52s