Quote Originally Posted by Psyche View Post

As Langkawi has many ssp. of Siamese origin, it suggests that when Sundaland was separated from the mainland, the peninsula extended southwards on the western side from Phuket to Langkawi, while Sundaland extended northwards on the eastern side to Samui & KPN.
When Sundaland was reconnected, these four areas became islands.
I was pondering this yesterday afternoon whilst in the pub, and came to the same conclusions.

As I think I have mentioned before, it can be very confusing when living where two major faunal areas (Sundaland and Indo-Burmese/Indo-Chinese) are merging, allbeit slowly.