Pattle Pun is a biology (and chemistry) lecturer at Wheaton College, Illinois, and he admits that the obvious meaning of Genesis is as AiG says. But he rejects this not for grammatical reasons, but to fit man’s fallible “science.”
It is apparent that the most straightforward understanding of Genesis, without regard to the hermeneutical considerations suggested by science, is that God created the heavens and the earth in six solar days, that man was created on the sixth day, and that death and chaos entered the world after the fall of Adam and Eve, and that all fossils [sic—creationists would say “most”] were the result of the catastrophic deluge that spared only Noah’s family and the animals therewith.
Pun, P. P. T., Journal of the American Scientific Affiliation 39, num. 14 (1987), emphasis added.