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Gore, Rich

The march toward extinction Rick Gore; Photographs by Jonathan Blair What caused earth's great dyngs - - National Geographic 12 .

Páginas: 662 - 699

Mining the fossil record, scientists struggle to explain mysterious episodes in which many of earth's species suddenly die out. Ichthyosaurs survived two great extinctions only to perish before the dinosaurs 66 million years ago.

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Subjects--Topical Terms:
DINOSAURS-EXTINCTION

Dewey Class. No.: NAT