Atavistical

Atavistical reversions: In biology the restoration of structural characters which have long been lost or obscured; near return to an original type occurring through partly modified descendants; resemblance to remote ancestors or progenitors; partial return, through hereditary influences, of remote ancestral forms.

All the legendry, of course, white and Indian alike, died down during the nineteenth century, except for occasional atavistical flareups.

Atavistical reversion may reach back to the very beginning of humanity, and some qualities of the first Great Mother may appear in the child of today.