The 化石盔甲 is a pre-困难模式 armor consisting of a 化石头盔, 化石板甲, and 化石护胫. It has a lower class amount of defense but increases thrown item velocity and damage significantly. In addition, wearing the full set grants a 50% chance to not consume thrown items (this does not include bombs and dynamite). This makes Fossil armor great for using 骨头标枪s, Bone Throwing Knives, and other 投掷武器. The Fossil armor set is made using 75 坚固头盔s, which have a chance to be dropped from the 提炼机 when 沙漠化石s are inserted.
- In the early access release of Terraria 1.3, the armor's set bonus was 75% chance to not consume thrown items. It was reduced to 50% before the public release.
- This is the only pre-hardmode armor, and the only armor on PC, in which the helmet sells for less than the rest of the set.