1. The eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago
   - Precambrian eon, Precambrian aeon, Precambrian period

Type of: aeon, eon

Encyclopedia: Precambrian

• zwieback
• Zwingli
• Zwinglian
• zwitterion
• Zworykin
• zydeco
• Zygnema
• Zygnemales
• Zygnemataceae
• Zygnematales
• zygo-
• Zygocactus
• Zygocactus truncatus
• zygodactyl
• zygodactyl foot
• zygoma
• zygomatic
• zygomatic arch
• zygomatic bone
• zygomatic process
• zygomorphic
• zygomorphous
• Zygomycetes
• Zygomycota
• Zygomycotina