For the similarly named material in Xenoblade Chronicles X, see Fossilized Bone.

Fossilised Bones are common materials in Xenoblade Chronicles. They can be dropped by Deinos Sauros, Laeklit Mammuts, and Korlba Pterix in Makna Forest. Fossilised Bones are not otherwise available.

Dropped by

Enemy Area Rate
Deinos SaurosMakna Forest62 %
Korlba PterixMakna Forest62 %
Laeklit MammutMakna Forest62 %