SCIENCE
Gidwitz, Tom

Story in the Stone: The Formation of a Tropical Land Bridge

(4) 4-6 Turnstone Rain Forest Pilot series. Fossils found on the Isthmus of Panama help paleontologists understand how and when the connection between North and South America was formed and its impact on life on land and in the oceans. Several transitions between general geologic principles and the scientists' work make the narrative hard to follow, though sketches from the scientists' field notes and clear photos and drawings are helpful. Bib., glos., ind.

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