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