Comment: 21:07 - 21:48 (00:41)
Source: Annenberg/CPB Resources - Earth Revealed - 11. Evolution Through Time
Keywords: fossil, tar, environment, habitat, "Rancho La Brea", "Los Angeles Basin", sagebrush, cypress, "pine tree", animal, deer, "dire wolf", "saber toothed cat", "ground sloth", mastodon, mammal, ecosystem, extinction, woodland
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Our transcription: Through careful identification of fossils collected at the tar pits, scientists have been able to reconstruct the former habitat at Rancho La Brea.
Forty thousand years ago the Los Angeles Basin was a sagebrush plain dotted with groves of cypress and pine and stream side woodlands.
A great abundance and diversity of animals lived here, including deer, dire wolves, saber toothed cats, ground sloths, and mastodons.
Most of the larger mammals in this ecosystem have since become extinct.
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Geology School Keywords
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