Extinction: A Lesson from the Past
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Uses drawings to outline three prehistoric periods of 500, 350, and 70 million years ago, to identify the then-living animals by fossil remains, and to point out that the principal cause of extinction was an inability to adapt to a changing environment., Describes the work of a paleontologist, and explains the basic causes of extinction that occurred to most animal species over the period of prehistoric life. Studies those species which still exist today, and analyzes why other species from earlier eras are extinct.
Copyright
Registered 1May71 · MP21642 (Jul-Dec 1971) Copyright holder: Reinald Werrenrath, Jr
Complete catalog record
Uses drawings to outline three prehistoric periods of 500, 350, and 70 million years ago, to identify the then-living animals by fossil remains, and to point out that the principal cause of extinction was an inability to adapt to a changing environment., Describes the work of a paleontologist, and explains the basic causes of extinction that occurred to most animal species over the period of prehistoric life. Studies those species which still exist today, and analyzes why other species from earlier eras are extinct.NOTE: Two (or more) records have been merged together to create this data.
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Sources
- 16mm Filmography (legacy record) — title, year, creator, length, format, color, sound, genre, description, catalog record
- U.S. Copyright Office, Catalog of Copyright Entries (renewals, 1970–1978) — copyright
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