However, Some of the later parts have been moved to Achievements.All different kinds of Wyvern discovered in Fossil Island would require level 66 Slayer to kill. RS Gold They would only be assigned to players who have completed the Bone Voyage quest.In Fossil Island, you will find all different kinds of Wyvern here. In order to kill them, you need a level 66 slayer and complete the Bone Voyage quest.Granite Boots is one of the new and special drops from the Wyverns in Fossil Island. Level 50 Defence is required and Strength should be equiped. Buy Runescape Gold What's more, it will offer strength bonus and defensive stats superior to Rune Boots.