User blog comment:BannedLagiacrus/Discussion of the Week: Monster Mutations/@comment-4212769-20140111180744/@comment-5043481-20140111233213

I think that the blangonga ancestor might have lived in between the desert an mountains, and some went to the desert and some to the mountains. They each adapted to thier own enviroment and each species was born!

Though, this ancestor would have to be similar to both as they are nearly identical...