Tertiary (65.5 mya - 1.8 mya) (sep 18, 65500000 BC – sep 17, 1800000 BC)
Description:
Radiation of mammals, birds, angiosperms; continents are nearing their modern-day positions; cool, dry climateAdded to timeline:
Date:
sep 18, 65500000 BC
sep 17, 1800000 BC
~ 5883516 years