Here we go back to Adam as a state of consciousness.

Adam in essence is a state of consciousness higher than the animal consciousness. 

Every living being possessing such a consciousness may thus be called Adam. 

That probably is how Adam once covered the entire Cosmos.

Its is all about the consciousness; it is all about the soul, remember;

it is all about the measure of Spirit contained by that soul.

This consciousness filled the Cosmos even before the first human appeared on Earth.

The angels that saw the likeness of Adam, said; are there then two powers in this world? 

Where upon God diminished the size of Adam,

who had up till then filled the whole of the universe. 2 Alphabet R. Akiba 59

.

...perhaps even before the Earth itself was formed.

Were you perhaps born the first man (Adam)  and formed before the hills? Job 15;7
(numquid primus homo tu natus es et ante colles formatus. Vulgata) 

Adam is a state of consciousness as well as the name of the being that possesses this state of consciousness.