Records of the appearance and disappearance of particular taxa at a single locality are insufficient to define a bioevent.
Gondwana formed prior to Pangaea, and later became part of it.
Continental Drift - Earths Surface Dinosaurs go extinct.
Galaxy z is 13.1 billion years old, only about 700 million years younger than the universe. That was when the Moon Formed, the Moon was twice as close then it is now causing 10,000 ft. (1.5 Billion Years since the Birth of Earth) - 2.4 billion years ago, oxygen in the atmosphere suddenly increased by about 10,000 times in just 200 million years.
Ocean organisms and primitive animals start to evolve.
The photo above is not to make you feel insignificant, it is only for reference and scale. Depending on your field of view, you would have to be around 100,000 light years away to see this Galaxy using the naked human eye.