Unidentified rare fossil
Unidentified rare fossil
Release date 7 September 2017 (Update)
Members only? Yes
Quest item? No
Tradeable? No
Equipable? No
Stackable? No
High Alch 0 coins
Low Alch 0 coins
Destroy Drop
Store price Not sold
Weight 0 kg
An unusual paleontological find ready for cleaning.
Unidentified rare fossil detail

An unidentified rare fossil is a fossil that can be obtained while performing activities on Fossil Island, including:

They can be traded to the Fossil Collector in exchange for 500 numulites.


Before players can clean fossils, they must build the cleaning bench east of the Museum Camp using five planks and five nails, granting 100 Construction experience.

To clean fossils, players must use the unidentified fossil on the fossil cleaning bench while wearing leather boots and leather gloves and in possession of a trowel, rock pick and specimen brush. Players can also clean fossils at the specimen table in the Varrock Museum.

Cleaning unidentified rare fossils will give the player a rare fossilised limbs, spine, ribs, pelvis, skull, or tusk.

Dropping monstersEdit

See Fossil Island fossils for strategies on obtaining fossils.

Monster Combat level Quantity Rarity
Deranged archaeologist 276 1 4; Rare (3/875; ~0.34%)
Ancient Wyvern 210 1 4; Rare (3/875; ~0.34%)
Spitting Wyvern 139 1 4; Rare (1/350)
Taloned Wyvern 147 1 4; Rare (1/350)
Long-tailed Wyvern 152 1 4; Rare (1/350)
Ancient Zygomite 109 1 4; Rare (1/500)
Lobstrosity 68 1 4; Rare (1/700)
Tar Monster 132 1 4; Rare (1/700)
Hoop Snake 19 1 5; Very rare (3/3500; ~0.086%)
Ammonite Crab 25 1 5; Very rare (3/3500; ~0.086%)