First, we should understand that projections of the age of fossils based upon archaeological findings often include speculation (archaeologists might say, "educated guesses") and that the common approach of overlaying them with the theory of evolution corrupts their value. We deal with these subjects in our booklet Creation or Evolution. Some fossils that are considered ancient may actually be more recent.
The Bible records the history of mankind from the creation of Adam and Eve. It does not deal with what we might call "manlike creatures" that lived on the earth before the creation of mankind, as we know it. Without divine revelation, there's no way of knowing what these creatures were or what purpose they served.
Twice, Adam is called "the first man" (1 Corinthians 15:45 1 Corinthians 15:45And so it is written, The first man Adam was made a living soul; the last Adam was made a quickening spirit.
American King James Version×, 47). Clearly, Adam and Eve were the first human beings God made "in His own image" (Genesis 1:27 Genesis 1:27So God created man in his own image, in the image of God created he him; male and female created he them.
American King James Version×). Their descendants have a spiritual component, called simply "the spirit" in Ecclesiastes 12:7 Ecclesiastes 12:7Then shall the dust return to the earth as it was: and the spirit shall return to God who gave it.
American King James Version×and "the spirit of the man" in 1 Corinthians 2:11 1 Corinthians 2:11For what man knows the things of a man, save the spirit of man which is in him? even so the things of God knows no man, but the Spirit of God.
American King James Version×. The joining of this spirit with the Holy Spirit of God is what makes conversion possible (Romans 8:16 Romans 8:16The Spirit itself bears witness with our spirit, that we are the children of God:
American King James Version×). Further, it sets humans made "in the image of God" off from prehistoric man.
For More Information, see Creation or Evolution: Does It Really Matter What You Believe?