I'm gobsmacked; all squeezed into the first part of a short 4400 history since the Flood (There seems to be an even greater difficulty over the development of radically different carnivorous phenotypes from herbivores in the space of about a 1500 year period between Fall and Flood). I wonder if Homo Heidelbergensis and the distribution of genetic markers have somehow been synthesized into the above picture by Ham's vaunted PhD's? Looks like I'm going to have to pay AiG a visit sometime.
In 1975 I read "The Genesis Flood" by Whitcomb and Morris. In one of their appendices they stated:
"... it seems Biblically possible, or even probable, that the Flood occurred several millenia before Abraham"*
Since Abraham is dated about 2000 BC Whitcomb and Morris were arguing for an Earth that could be as much as 10,000 years old. This at least made life a little easier for them; they didn't have to place the Flood around 4400 years ago thus having to explain away the apparent conflict with, say, Egyptian history. What has changed since 1961 when "The Genesis Flood" was published?
* See "The Genesis Flood", Page483, 1974 edition.