Sci-Tech Dictionary:
(′əp·ər kri′tā·shəs)
Upper Cretaceous
(geology) The late epoch of the Cretaceous period of geologic time, beginning about 90 million years ago.
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 | Sci-Tech Dictionary. McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved. Read more |
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- When was the Cretaceous Period?
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Keep Reading
Mentioned In:
- Campanian (geology)
- Ammanian (geology)
- Cenomanian (geology)
- Coloradoan (geology)
- Dakotan (geology)
- Angoumian (geology)
- Silicoflagellata
- turonian
- Ceratopsia (paleontology)
- senonian
- Hemicidaroida
- Odontognathae (fossil birds)
- Comanchean (geology)
- Gulfian (geology)
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