skip to main content
Great Transitions

Great Transitions

Apply for Free Membership

Stunning fossil finds have revealed the fascinating stories of major transitions in the history of life on Earth—from fish that gained the land, to reptiles that took to the air, and primates that walked on two legs. This trilogy features leading evolutionary paleontologists as they canvas for rocks of the right ages, discover transitional forms, and reconstruct historic environments of early life forms.

Illustration of a four-legged animal standing in shallow water on top of a layer of rock. Caption: Many things must happen for an animal to be fossilized.
Great Transitions
Episode 1
17 minutes 17 seconds
Grade Level: 7 - 12
A diagram showing the transition from Reptiles (dinosaurs and crocodile-like animal) to Archaeopteryx (feathered animal between a reptile and a bird), to Birds. Caption: between birds and reptiles.
Great Transitions
Episode 2
18 minutes 59 seconds
Grade Level: 7 - 12
Illustration of a primate standing on two legs. Caption: Ardi is neither a chimp nor is she a human.
Great Transitions
Episode 3
19 minutes 44 seconds
Grade Level: 7 - 12