Phanerozoic Eon — synonyms, definition
1. Phanerozoic eon (Noun)
2 synonyms
Phanerozoic Phanerozoic aeon
1 definition
Phanerozoic eon (Noun) — The period from about 540 million years ago until the present.
2 types of
aeon eon
3 parts
Age of Mammals Cenozoic Cenozoic era