Dragon Skeletons
Dragon Skeletons are added by Ice and Fire and spawn in Extremely Hot or Cold biomes. They are not the remains of a previously killed Dragon. This is about Dragons from Ice and Fire and is not to be confused with the Dragon type of Lycanites Mobs
Fire Dragon Skeletons
Fire Dragon Skeletons are found in hot biomes like deserts and mesas. Most mid-large size deserts will have at least 1 skeleton. These skeletons can range from tier 1 to tier 5. Unlike a body of a dead dragon, it has no flesh, meat, scales and blood. It only contains the skull and the bones. Finding Fire Dragon Skeletons is a good way to get fire resistance through Fire Dragon's Eye without having to fight a fire dragon.
Ice Dragon Skeletons
Ice Dragon Skeletons are rarer has they spawn in cold biomes. These skeletons can range from tier 1 to tier 5. Unlike a body of a dead dragon, it has no flesh, meat, scales and blood. It only contains the skull and the bones. Finding Ice Dragon Skeletons is a good way to get the Ice Dragon's Eye without having to fight an ice dragon.