Science, Volume 69, Issues 1775-18001929 |
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Page 140
... Eocene , with further deepening during Oligocene and Pliocene times . Even now the bottom of the Gulf of Mexico is not creased with folds or much disfigured by normal faulting , as is that of the Caribbean Sea . On all sides it is a ...
... Eocene , with further deepening during Oligocene and Pliocene times . Even now the bottom of the Gulf of Mexico is not creased with folds or much disfigured by normal faulting , as is that of the Caribbean Sea . On all sides it is a ...
Page 141
... Eocene faunas ( Claibornian ) , and accordingly this basement is usually assigned to the early Eocene . On the basis of the late Mesozoic faunas , however , the California ones are seen to be so different from those of the same age in ...
... Eocene faunas ( Claibornian ) , and accordingly this basement is usually assigned to the early Eocene . On the basis of the late Mesozoic faunas , however , the California ones are seen to be so different from those of the same age in ...
Page 142
... Eocene time . On the other hand , it is very probable that the mountain ranges of British Honduras now made the dominant anticlinorium , which appears to have extended unbroken across the Antillean Sea through the Caymans into ...
... Eocene time . On the other hand , it is very probable that the mountain ranges of British Honduras now made the dominant anticlinorium , which appears to have extended unbroken across the Antillean Sea through the Caymans into ...
Page 144
... Eocene time , when the Laramide movements were completed . The same appears to have been true of the Costa Rica - Panama land - bridge , though much volcanic activity was general to this region well past the middle of the Eocene . The ...
... Eocene time , when the Laramide movements were completed . The same appears to have been true of the Costa Rica - Panama land - bridge , though much volcanic activity was general to this region well past the middle of the Eocene . The ...
Page 271
... Eocene to the large highly specialized types of the present day ) involve a time element , the evolu- tionary scheme by which the phyla themselves are interconnected ( see reference cited above ) does not . So it is assumed that in so ...
... Eocene to the large highly specialized types of the present day ) involve a time element , the evolu- tionary scheme by which the phyla themselves are interconnected ( see reference cited above ) does not . So it is assumed that in so ...
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Academy acid Advancement of Science agricultural Aleš Hrdlička American Association American Museum animal asso atoms awarded biological Botanical Bureau carbon carbon dioxide cell cent chairman chemical chemistry Chicago chromosomes College Columbia University committee contributions council director discussion eggs elected electrons energy engineering entomology Eocene Experiment Station experimental fact field fifth New York fundamental funds Geological glacial Grand Central Terminal Harvard Henry Fairfield Osborn ical important industrial insects Institute interest investigation John laboratory lectures light material mathematical medal Medical medicine ment method National nature observed organization papers period physics plant plastids Pliocene possible present president problems production Professor protozoa radiation recent reported Rockefeller Foundation School scientific secretary Section session Sigma Xi Smithsonian Institution Building Society species temperature theory tion United versity vice-president Washington William York City York meeting zoology