Complex sentence: Marojejy National Park represents the northern limit of its current distribution, although historical sifaka range maps created by Grandidier and Milne-Edwards in the late 19th Century show silky sifakas as far north as the Bemarivo River, north of Sambava.
Split into simpler sentences: Marojejy National Park represents the northern limit of its current distribution. Historical sifaka range maps created by Grandidier and Milne-Edwards' in the late 19th Century show silky sifakas as far north as the Bemarivo River, north of Sambava.