Part 6 Continental Drift -- Understanding the Earth
Host; Dr. David Pearson.
•Northern hemisphere continents together
•Paleontological
•Edwin H. Colbert his interest in continental drift based on fossils -- Lystrosaurus Zone (Triassic) Fauna from Antarctica
•http://www.sciencemag.org/cgi/content/abstract/161/3840/460

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Today, continental theory is superseded by plate tectonics.
Continental drift treated only the continents as jigsaw puzzle whereas plate tectonics treats the continents, oceans and the earth's crust as pieces of jigsaw puzzle.
These segments are a flashback to part of the development of the current theory