
Crocodile Ancestors
Clip | 2m 59sVideo has Closed Captions
Scientists are now discovering the earliest ancient crocodiles.
Scientists are now discovering the earliest ancient crocodiles by tracing one branch of the vast tree of life 230 million years into the geologic period called the Triassic. And they looked nothing like the crocs alive today.
Problems playing video? | Closed Captioning Feedback
Problems playing video? | Closed Captioning Feedback
A Shining Red Production in association with Twin Cities Public Television, Inc.

Crocodile Ancestors
Clip | 2m 59sVideo has Closed Captions
Scientists are now discovering the earliest ancient crocodiles by tracing one branch of the vast tree of life 230 million years into the geologic period called the Triassic. And they looked nothing like the crocs alive today.
Problems playing video? | Closed Captioning Feedback
How to Watch When Whales Walked: Journeys in Deep Time
When Whales Walked: Journeys in Deep Time is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire Tablet, Roku, Samsung Smart TV, and Vizio.
Buy Now
Providing Support for PBS.org
Learn Moreabout PBS online sponsorshipVideo has Closed Captions
Clip | 2m 59s | Scientists are now discovering the earliest ancient crocodiles. (2m 59s)
Video has Closed Captions
Clip | 4m 33s | Birds have colonized every environment on Earth, so how did they come to be so diverse? (4m 33s)
Video has Closed Captions
Clip | 3m 12s | Blue whales are the biggest creatures ever. But how did they get so big? (3m 12s)
Video has Closed Captions
Clip | 4m 46s | Today there are three species of elephant, but 16 million years ago there were dozens. (4m 46s)
Providing Support for PBS.org
Learn Moreabout PBS online sponsorshipSupport for PBS provided by:
A Shining Red Production in association with Twin Cities Public Television, Inc.