Phanerozoic

adjective

Phan·er·o·zo·ic ˌfa-nə-rə-ˈzō-ik How to pronounce Phanerozoic (audio)

: of, relating to, or being an eon of geologic history that comprises the Paleozoic, Mesozoic, and Cenozoic or the corresponding systems of rocks see Geologic Time Table

Phanerozoic noun

Word History

Etymology

Greek phanerós "visible, conspicuous" (from phan-, base of phaínomai, phaínesthai "to become visible, come to light, appear" + -eros, adjective suffix) + -o- + -zoic entry 2 — more at fantasy entry 1

Note: The term was introduced by the American geologist George Halcott Chadwick (1876-1953) in "Subdivision of Geologic Time," Bulletin of the Geological Society of America, vol. 41 (1930), pp. 47-48. The name refers to the easily visible fossil records that appear in this eon, in contrast to the earlier period, which Chadwick referred to collectively as the Cryptozoic (see crypto-, -zoic entry 2).

First Known Use

1930, in the meaning defined above

单词	Phanerozoic
释义	Phanerozoic adjective Phan·er·o·zo·ic ˌfa-nə-rə-ˈzō-ik : of, relating to, or being an eon of geologic history that comprises the Paleozoic, Mesozoic, and Cenozoic or the corresponding systems of rocks see Geologic Time Table Phanerozoic noun Word History Etymology Greek phanerós "visible, conspicuous" (from phan-, base of phaínomai, phaínesthai "to become visible, come to light, appear" + -eros, adjective suffix) + -o- + -zoic entry 2 — more at fantasy entry 1 Note: The term was introduced by the American geologist George Halcott Chadwick (1876-1953) in "Subdivision of Geologic Time," Bulletin of the Geological Society of America, vol. 41 (1930), pp. 47-48. The name refers to the easily visible fossil records that appear in this eon, in contrast to the earlier period, which Chadwick referred to collectively as the Cryptozoic (see crypto-, -zoic entry 2). First Known Use 1930, in the meaning defined above
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