Just prior the cataclysm of Tara 550 millions years ago, a rescue mission for the Taran souls of HU-1 was set in motion.

Being skilled in Time Portal mechanics and Interdimensional portal travel, the Ceres created a plan the Ur-Terranates would fulfill.

With assistance of the Sirian Council, Elohim, and HU-2 Pleidians, the Ur-Terranates formed an agreement with several other races called The Covenant of Palaidor.

The mission involved the creation of the Sphere of Amenti to allow open transit between Earth and Tara for beings possessing genetic codes that could endure portal transit.

Those involved in this agreement (the Sirians, Pleidians, Ur-Terranates, Elohim, Lyrans, Ceres, Lumians and Alanians) became known as the Palaidorians.

(See: Fall of Man)

(Voyagers II – Page 6)