Do you know what the fallacy of begging the question is?
I cannot answer your question because it assumes the truth of your unsupported belief. There is no such thing as "prehistory."
I could do similarly by asking you to explain the flood-deposited bones that have been found.
The bones from dinosaurs came from somewhere and the only place one can find some type of history on these animals comes from:
Gen 1:24 And God said, Let the earth bring forth the living creature after his kind, cattle, and creeping thing, and beast of the earth after his kind: and it was so.
Gen 1:25 And God made the beast of the earth after his kind, and cattle after their kind, and every thing that creepeth upon the earth after his kind: and God saw that it was good.
yôm
yome
From an unused root meaning to be hot; a day (as the warm hours), whether literally (from sunrise to sunset, or from one sunset to the next), or
figuratively (a space of time defined by an associated term), (often used adverbially): - age, + always, + chronicles, continually (-ance), daily, ([birth-], each, to) day, (now a, two) days (agone), + elder, X end, + evening, + (for) ever (-lasting, -more), X full, life, as (so) long as (. . . live), (even) now, + old, + outlived, + perpetually, presently, + remaineth, X required, season, X since, space, then, (process of) time, + as at other times, + in trouble, weather, (as) when, (a, the, within a) while (that), X whole (+ age), (full) year (-ly), + younger.
Gen 2:4 These are the
generations of the heavens and of the earth when they were created,
in the day that the LORD God made the earth and the heavens,