"I've located a vault, and I think I'm going to get proof of a previous civilization there, a precursor race… something."
Chelli Lona Aphra[src]

A percursor species[1] (also precursor race)[2] was a species that eventually evolved into another or several other species. In some cases, the passage from a precursor to its descendants was accompanied by the development of sentience (as exemplified by the sentient Dowutins, whose precursors were herd animals).[1] In other cases, a species that was already sentient to begin with could give rise to several distinct sentient lifeforms (as exemplified by the Pau'ans and Utai, who shared a sentient ancestor).[3]



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