Evolution of dwarfing in insular elephants
Mammoths survive on island until 2000 BC
I hadn't realized how widespread this phenomenon was or heard of Foster's Island Rule before, but your explanation makes sense.
On the Santa Barbara Channel Islands, a couple of nearly complete skeletons have been found in the dunes. Prof. Larry Agenbroad of Santa Barbara published several papers on these discoveries. The really good find was carbon dated to about 11,000 BC. In the mid-1990's the local geological society ran some field trips out to the sites. Got a few of us desk jockies to do a little field work.
Thanks for the links.