Phanerozoic (redirected from Phanerozoic eon)
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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