phanerozoic

name

1. A geologic eon from about 538.8 million years ago to the present.

adj

1. (not-comparable)Of or relating to the Phanerozoic eon.
2. (alt-of, alternative, not-comparable)Alternative form of Phanerozoic.

   “Secular distribution of biogenic silica through the phanerozoic: comparison of silica-replaced fossils and bedded cherts at the series level .”