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Eons: When a Billion Years Disappeared

11 minutes 9 seconds

Now Playing As: Captioned (English) (change)

In some places, the rocks below the Great Unconformity are about 1.2 billion years older than those above it. This missing chapter in Earth’s history might be linked to a fracturing supercontinent, out-of-control glaciers, or the diversification of life. Part of the "Eons" series

Media Details

Runtime: 11 minutes 9 seconds

Topic: Geography, Science
Subtopic: Earth Sciences, Prehistoric Life, World Geography
Grade/Interest Level: 10 - 12
Standards:

Release Year: 2020
Producer/Distributor: PBS Digital Studios
Series: Eons
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A Wooly Rhino is grazing on the slope of a mountain.

Still image from: Eons: The Hellacious Lives of the "Hell Pigs"

A group of four legged terrestrial creatures. Caption: Synapsids.

A pair of Ichthyosaurs hunting prey in the sea.

Still image from: Eons: When We Met Other Human Species

Still image from: Eons: How Volcanoes Froze the Earth (Twice)

Still image from: Eons: How Earth's First, Unkillable Animals Saved the World

A giant deer roams a grassland.

An illustration depicts the dinosaur, Coelophysis, with new born Coelophysis in between its beak.

A painting depicts scientists comparing Piltdown Man's remains to other species. Charles Dawson and Sir Arthur Smith Woodward are seen standing together.