Precambrian
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Timeline
Precambrian
Before 1900
1900-1999
2000-present
In the real world
- The Precambrian supereon is coming to an end, and the Cambrian explosion is beginning to take place, during which most major animal phyla appear.
In fiction
- A species of crustacean that lived in colonies on the ocean floor exists at around this time. In approximately 541 million years, one of these colonies would become Destoroyah. 541,000,000 B.C. is the latest possible year that this could be taking place, due to Destoroyah's status as a Precambrian monster.