The Grand Canyon Chronicles - Precambrian And Paleozoic Eras

Year Published: 1982

Creator: Charles Cahill And Associates Inc

Format: 16mm

Sound: sound

Description: Points out that the Grand Canyon is a geological laboratory, with its walls telling about the forces and events of the last two billion years. Discusses the earliest life on earth, the appearance of the first sea animals, plants, and land animals, and the Age of Fishes. Narrated by Orson Welles.

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