The Encyclopedia Americana, Volume 8Grolier Incorporated, 1998 - Encyclopedias and dictionaries |
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Page 178
CRETACEOUS PERIOD FRITZ HENLE , FROM PHOTO RESEARCHERS. 178 CRETACEOUS PERIOD , kri - ta'shǝs , in geology , the last period of the Mesozoic Era . The Cretaceous began about 144 million years ago and ended about 65 million years ago ...
CRETACEOUS PERIOD FRITZ HENLE , FROM PHOTO RESEARCHERS. 178 CRETACEOUS PERIOD , kri - ta'shǝs , in geology , the last period of the Mesozoic Era . The Cretaceous began about 144 million years ago and ended about 65 million years ago ...
Page 179
... period ; horned ceratopsids , which appeared in the mid- Cretaceous and persisted to the very end of the period ; and ornithopods , which first appeared during the mid - Triassic Period and died out dur- ing the Late Cretaceous . The ...
... period ; horned ceratopsids , which appeared in the mid- Cretaceous and persisted to the very end of the period ; and ornithopods , which first appeared during the mid - Triassic Period and died out dur- ing the Late Cretaceous . The ...
Page 545
... period of light , or natural day , as opposed to the period of darkness . The word still is commonly used in this sense . The most usual meaning of " day , " however , is the period of light and of darkness combined . Even in this sense ...
... period of light , or natural day , as opposed to the period of darkness . The word still is commonly used in this sense . The most usual meaning of " day , " however , is the period of light and of darkness combined . Even in this sense ...
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