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Of, relating to, or being the geologic time period from approximately 542 million years ago to the present, comprising the Paleozoic, Mesozoic, and Cenozoic Eras, and marked by an abundance of fossil evidence of life, especially higher forms, in the corresponding rocks. See Table at geologic time.
The Phanerozoic Eon.
(Geological Science) of or relating to that part of geological time represented by rocks in which the evidence of life is abundant, comprising the Palaeozoic, Mesozoic, and Cenozoic eras
(Geological Science) the Phanerozoic the Phanerozoic era
The period of geologic time from about 540 million years ago to the present, including the Paleozoic, Mesozoic, and Cenozoic Eras. The Phanerozoic Eon is marked by an abundance of fossil evidence of life, especially more complex forms. See Chart at geologic time.