Unidentified large fossil
Dropped on 1 slayer drop table · wiki page
| Monster | Table | Qty | Rate | Chance per avg task | Assigned by |
|---|---|---|---|---|---|
| Spitting Wyvern | Tertiary | 1 | 1/87.5 | 33.1% | Chaeldar 10–20 Konar 15–30 Nieve 5–25 Duradel 20–50 |
Rates from the OSRS Wiki drop tables (Drop Rate Project). "Chance per avg task" uses the midpoint task size of the highest master that assigns the monster.