40:5.9

Mortals of series one inhabit the worlds of space during the earlier epochs of the evolution of mankind and embrace the most primitive types of human minds. On many worlds like pre-Adamic Urantia great numbers of the higher and more advanced types of primitive men acquire survival capacity but fail to attain Adjuster fusion. For ages upon ages, before man’s ascent to the level of higher spiritual volition, the Adjusters occupy the minds of these struggling creatures during their short lives in the flesh, and the moment such will creatures are indwelt by Adjusters, the group guardian angels begin to function. While these mortals of the first series do not have personal guardians, they do have group custodians.