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Bookmark or Share- Cretaceous Period | Definition, Climate, Dinosaurs, & MapThe Cretaceous is the longest period of the Phanerozoic Eon. Spanning 79 million years, it represents more time than has elapsed since the extinction of the dinosaurs, which occurred at the end of the period. geologic time. The stratigraphic chart of geologic time. The name Cretaceous is derived from creta, Latin for “ chalk ,” and was ...
- Cretaceous Period Facts and Information | National GeographicCretaceous Period. During this period, oceans formed as land shifted and broke out of one big supercontinent into smaller ones. Continents were on the move in the Cretaceous, busy remodeling the ...
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