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When Birds Had Teeth

Season 1 Episode 52 | 11m 29s

Experts are still arguing over whether Archaeopteryx was a true bird, or a paravian dinosaur, or some other kind of dino. But regardless of what side you’re on, how did this fascinating, bird-like animal relate to today’s birds? It turns out its teeth were a clue that this story goes all the way back to what we now call the non-avian dinosaurs.

Aired: 08/06/18
Extras
What did ancient people once know about these bizarre megafauna that we’ve since forgotten?
5,700 years ago, woolly mammoths crossed a remote tundra island off Alaska.
Why did vertebrates conquer both the land and the air before the depths of the sea?
Long-extinct dinosaurs may still haunt us—possibly driving us to age faster than any vertebrate.
Only twice in Earth's history have supermountains risen, and both times reshaped life forever.
Was the T-Rex given the wrong name?
500+ pterosaur fossils found at Solnhofen may be hiding a dark secret distorting our view of them.
Why are our teeth so sensitive? The answer originates in the armored skin of ancient fish.
For flowering plants to take over, they first helped burn the old world—and then put the fires out.
Ancient weeds mimicked crops, tricking farmers into domesticating friends—and enemies—by mistake.
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What did ancient people once know about these bizarre megafauna that we’ve since forgotten?
5,700 years ago, woolly mammoths crossed a remote tundra island off Alaska.
Why did vertebrates conquer both the land and the air before the depths of the sea?
Long-extinct dinosaurs may still haunt us—possibly driving us to age faster than any vertebrate.
Only twice in Earth's history have supermountains risen, and both times reshaped life forever.
Was the T-Rex given the wrong name?
500+ pterosaur fossils found at Solnhofen may be hiding a dark secret distorting our view of them.
Why are our teeth so sensitive? The answer originates in the armored skin of ancient fish.
For flowering plants to take over, they first helped burn the old world—and then put the fires out.
Ancient weeds mimicked crops, tricking farmers into domesticating friends—and enemies—by mistake.