"Oh, absolutely," Ham answers, "because, you know, the Bible teaches that God made land animals on day six, alongside of Adam and Eve."
I do not think that Genesis is referring to literal 24 hour days. A day from God's perspective is not the same as a day from ours. Like the theory of Relativity, the Bible sees time as relative to one's perspective. The point of Genesis is that the universe came about over a period of time as part of a plan and humans were the culmination of that plan.
http://www.answersingenesis.org/docs2005/1101genesis_history.asp
if your interested in the case for a plainly written history in Genesis.