Unidentified medium fossil
MembersUntradeable
Sources from the OSRS Wiki's drop, shop and recipe data (CC BY-NC-SA 3.0), checked 2026-10-09; the verdict and ordering are ours, built from that data. Item sprite © Jagex.
Ironman verdict
Unidentified medium fossil is a members item. It cannot be traded, so every account, Ironman or not, gets it the same way. We list 9 monsters, 1 shop and 8 other sources for it.
The lowest-level monster that drops it is Hoop Snake (level 19), at 3/700, about one in 233 kills. The best rate is from Ancient Wyvern (level 210): 12/700. The 9 monsters we list with a combat level range from level 19 to 276. It is also on offer at Mairin's Market for 200 mermaid's tear, not coins. It also comes from 8 other sources, such as Herbiboar and Sulliuscep.
Among the bosses we cover, Deranged Archaeologist drops it. The shop that stocks it is in Fossil Island.
No recipe in our data uses it as a material.
Where to get it, easiest first
- 1.Buy atMairin's Market · 200 mermaid's tear in Fossil Island, 100 in stock at a time
- 2.KillHoop Snake · level 19, drops one at 3/700 (about one in 233 kills)
- 3.KillAmmonite Crab · level 25, drops one at 3/700 (about one in 233 kills)
- 4.KillLobstrosity · level 68, drops one at 5/700 (about one in 140 kills)
- 5.Earn fromHerbiboar · another source in the game
- 6.Earn fromSulliuscep · another source in the game
- 7.Earn fromBowl of fish · another source in the game
Our order: buying first, then making it (lowest skill level first), then killing for it (lowest-level monster first), then other sources. Up to three of each; the full lists are below.
Monster drops
| Dropped by | Level | Quantity | Rarity |
|---|---|---|---|
| Ancient Wyvern | 210 | 1 | 12/700 |
| Deranged archaeologist | 276 | 1 | 12/700 |
| Spitting Wyvern | 139 | 1 | 10/700 |
| Taloned Wyvern | 147 | 1 | 10/700 |
| Long-tailed Wyvern | 152 | 1 | 10/700 |
| Ancient Zygomite | 109 | 1 | 7/700 |
| Hoop SnakeEasiest | 19 | 1 | 3/700 |
| Ammonite Crab | 25 | 1 | 3/700 |
| Lobstrosity | 68 | 1 | 5/700 |
Best rates first, plus the lowest-level monsters that drop it.
Shops
- Mairin's Market200 mermaid's tear · stock 100
Other sources
Minigames, reward chests, clues, skilling and other non-combat sources.
Related items
Also sold at Mairin's Market
Also dropped by Hoop Snake
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