The Trope History of the Universe

When making a timeline for a fictional universe, there are many Speculative Fiction Tropes that tend to pop up, especially if it is based on the real world. This list notes them in the order they (typically) appear. Its purpose is both to help with World Building, and to help when writing a crossover.

This list also includes nonfictional historical and scientific "facts" that are the basis of many fictional stories, such as the "A meteor killed off the dinosaurs" theory.

Related to Hollywood History, but more detailed.

Examples: