NOUN
- the period from about 540 million years ago until the present, a period when abundant life existed
How To Use Phanerozoic eon In A Sentence
- The record has been much deformed, reconstituted, and obliterated during the subsequent Proterozoic and Phanerozoic eons.
- The record has been much deformed, reconstituted, and obliterated during the subsequent Proterozoic and Phanerozoic eons.
