Phanerozoic

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Related to Phanerozoic eon: Paleozoic era, Paleogene Period

Phanerozoic

the period of time from the beginning of the CAMBRIAN until the present, i.e. the PALAEOZOIC, MESOZOIC and CENOZOIC eras.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
"These isotopic excursions are enormous in comparison with any excursions in the preceding 1.2 billion years or in the Phanerozoic eon [the last 543 million years]," the researchers report in their SCIENCE paper.