Billions of Years ago
13.7 billion BC
- The "Big Bang" forms the universe. Batman and the Green Lantern are present when they try to stop an alternate version of David Clinton. (JLU: The Once and Future Thing Part Two: Time, Warped)
4.6 Billion BC
- The Earth is formed out of cosmic dust orbiting the newborn Sun.
Millions of Years Ago
65 Million BC
- A majority of creatures, including dinosaurs, on Earth are destroyed by a large meteor. An alternate version of Chucko is present thanks to the alternate David Clinton. (JLU: The Once and Future Thing Part Two: Time, Warped)