Complex sentence: The Arakan forest turtle ("Heosemys depressa") is an extremely rare turtle species which lives only in the Arakan hills of western Myanmar and the bordering Chittagong Hill Tracts of Bangladesh.
Split into simpler sentences: The Arakan forest turtle ("Heosemys depressa") is an extremely rare turtle species which lives only in the Arakan hills of western Myanmar. And some in the bordering Chittagong Hill Tracts of Bangladesh.