Phanerozoic Aeon — synonyms, definition
1. Phanerozoic aeon (Noun)
2 synonyms
Phanerozoic Phanerozoic eon
1 definition
Phanerozoic aeon (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