Search Result：phanerozoic eon
phanerozoic eon 
(TTS Sound)
(TTS Sound)Overview of noun phanerozoic_eon
The noun phanerozoic eon has 1 sense
- Phanerozoic, Phanerozoic eon, Phanerozoic aeon -- (the period from about 5,400 million years ago until the present)