Yes, say it Primordial, or existing from the beginning of time. Anything is possible, really.
primordial
The primordial to a cat is a kitten!
Animals hunting for food is a primordial instinct.
the universe originated some finite time ago from a primordial state
We have been using this primordial book since the Vietnam War, it seems.
Long ago some scientists think living things came from a primordial soup.
(at the beginning of time or the Earth)"Evolutionary theory cannot currently explain how life formed from the primordial elements."(another less frequent use : existing at the beginning of development)"Protein was the primordial basis of my training diet."
I see it as part of the primordial ooze I suppose.
Primordial Undermind was created in 1988.
Primordial Lovers was created in 1970.
It refers to liquid and chemical mixture from which life on Earth began. Biologists also call it the primordial soup, or the primordial sea.
Atavistic refers to something that is primordial or basic. An example is, "When John saw the bear, his heart pounded as he reverted to his atavistic fears."