Phanerozoic eon
Phanerozoic eon
| Noun | 1. | Phanerozoic eon - the period from about 5,400 million years ago until the present |
| 单词 | phanerozoic eon | |||
| 释义 | Phanerozoic eonPhanerozoic eon
Phanerozoic EonPhanerozoic Eona major interval of time, encompassing the Paleozoic, Mesozoic, and Cenozoic eras of the earth’s geologic history. The total duration of the Phanerozoic eon was 570 million years. The eon was delineated in 1930 by the American geologist G. Chadwick, who divided all of geologic history into the Cryptozoic and Phanerozoic eons. Phanerozoic eon
Synonyms for Phanerozoic eon
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