Interestingly, there is little change near the southern tip of Florida, which might explain the locations of the findings in TFA.
As you can seeon the map, huge areas were dry land then but are ocean today. On a global scale, these include the entire Hudson Bay, and all the sea between the UK and Western/Northern Europe.
So I guess your theory isn't controversial at all.
http://pubs.usgs.gov/circ/c1075/images/sea.gif
Interestingly, there is little change near the southern tip of Florida, which might explain the locations of the findings in TFA.
As you can seeon the map, huge areas were dry land then but are ocean today. On a global scale, these include the entire Hudson Bay, and all the sea between the UK and Western/Northern Europe.
So I guess your theory isn't controversial at all.