So Here's my analysis on Beast Wars:

4 Million years ago
* Bumblebee and Wheeljack find energon on a scouting mission. On the way to Iacon The Seekers attack them.
* The Autobots launch the Ark On a mission to find energon. The Decepticons follow them. The Decepticons on the Nemesis board the Ark.
* During the fight both ships crash into earth, the nemesis into the ocean, And the Ark into Mount St. Hilary. Before the crash however,several objects were ejected from the Nemesis, including an escape pod , and what would become the Pearl of Bahoudin(From More Than Meets The Eye Part 1).
* The Predacons and Maximals travel back in time, crashing into earth, Before the Axalon crashed however, several stasis pods were launched from the ship.