The Assiti are an alien species that will exist 85 million years in the distant future.
Assiti were a sophisticated and curious alien race that fancied their solipsist amusements with the fabric of spacetime. A minor mistake by the Assiti from a shard of cosmic garbage, a discarded fragment of what, for lack of a better term, from their art resulted in multiple temporal transpositions and divergent timelines.
Some 85 million years later, after many stern warnings against their "art", the Assiti were exterminated by the Fta Tei, a species descended from Humanity.
- 1632, by Eric Flint (2000)