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Fossil Island wyverns icon.png

Long-tailed Wyverns are Slayer monsters that require a Slayer level of 66 in order to be harmed. They reside in the Wyvern Cave on Fossil Island. Like other Wyverns, they require an elemental, mind, dragonfire or ancient wyvern shield to be equipped in order to be slain.



Item Quantity Rarity GE market price
Wyvern bones.png Wyvern bones 1 Always 2,725


Item Quantity Rarity GE market price
Adamant full helm.png Adamant full helm 1 Uncommon 1,816
Battlestaff.png Battlestaff 3–5 (noted) Uncommon 24,483–40,805
Mithril kiteshield.png Mithril kiteshield 1 Uncommon 1,044
Air battlestaff.png Air battlestaff 1 Uncommon 8,948
Adamant crossbow (u).png Adamant crossbow (u) 1 Uncommon 1,903
Adamant battleaxe.png Adamant battleaxe 1 Uncommon 2,157
Rune pickaxe.png Rune pickaxe 1 Uncommon 18,715
Adamant platebody.png Adamant platebody 1 Uncommon 9,407
Granite longsword.png Granite longsword 1 Rare (1/512) 20,638
Granite boots.png Granite boots 1 Very rare (1/2,560) 927,130


Item Quantity Rarity GE market price
Pure essence.png Pure essence 150 (noted) Common 300
Teak logs.png Teak logs 35 (noted) Common 10,010
Snape grass.png Snape grass 10–15 (noted) Common 2,710–4,065
Coal.png Coal 25 (noted) Common 4,050
Adamantite bar.png Adamantite bar 1–4 (noted) Uncommon 1,904–7,616
Runite ore.png Runite ore 1–2 (noted) Uncommon 11,169–22,338

Runes and Ammunition

Item Quantity Rarity GE market price
Water rune.png Water rune 50 Common 200
Air rune.png Air rune 25 Common 125
Law rune.png Law rune 15 Common 2,490
Adamant arrow.png Adamant arrow 38–42 Uncommon 2,166–2,394
Soul rune.png Soul rune 10 Uncommon 1,460
Blood rune.png Blood rune 15 Uncommon 5,505
Chaos rune.png Chaos rune 15 Uncommon 1,335
Death rune.png Death rune 15 Uncommon 3,045
Runite bolts.png Runite bolts 12–29 Rare 4,836–11,687


Item Quantity Rarity GE market price
Grimy ranarr weed.png Grimy ranarr weed 1 Uncommon 7,640
Grimy kwuarm.png Grimy kwuarm 2 (noted) Uncommon 2,330
Grimy cadantine.png Grimy cadantine 2 (noted) Uncommon 2,624
Grimy lantadyme.png Grimy lantadyme 2 (noted) Uncommon 2,782
Grimy torstol.png Grimy torstol 1 Uncommon 8,341


Item Quantity Rarity GE market price
Watermelon seed.png Watermelon seed 15 Uncommon 1,065
Seaweed spore.png Seaweed spore 3–12 Uncommon 2,892–11,568
Torstol seed.png Torstol seed 1 Rare 58,385
Ranarr seed.png Ranarr seed 1 Rare 45,466
Yew seed.png Yew seed 1 Rare 68,162
Mahogany seed.png Mahogany seed 1 Rare 3,029
Magic seed.png Magic seed 1 Rare 118,931
Spirit seed.png Spirit seed 1 Rare Not sold


Item Quantity Rarity GE market price
Numulite.png Numulite 1–21 Common (18/35=51%) 20–420
Unidentified small fossil.png Unidentified small fossil 1 Uncommon (1/35=2.9%) Not sold
Unidentified medium fossil.png Unidentified medium fossil 1 Uncommon (1/70=1.4%) Not sold
Unidentified large fossil.png Unidentified large fossil 1 Uncommon (2/175=1.14%) Not sold
Unidentified rare fossil.png Unidentified rare fossil 1 Rare (1/350=0.28%) Not sold


Item Quantity Rarity GE market price
Lobster.png Lobster 2 Common 334
Coins 1000.png Coins 3,000 Common Not sold
Prayer potion(4).png Prayer potion(4) 1 Uncommon 10,056
Calcite.png Calcite 2 Uncommon 40
Pyrophosphite.png Pyrophosphite 2 Uncommon 142
Clue scroll (hard).png Clue scroll (hard) 1 Rare Not sold
Wyvern visage.png Wyvern visage 1 Very rare (1/12,000) 17,325,532


  • They appear to use all attack styles when using melee, depending on the animation they use: slashing when they use their talons, stabbing when they jab with their tail and crushing when they bite the target.
  • Upon release, the wyvern's Defence level was 120. This was reduced to 90 in an update on 18 January 2018. This also changed its combat level from 159 to 152.
  • Upon release, Long-tailed Wyverns only dropped a maximum of 6 seaweed spores. This was increased to 12 in an update on 12 July 2018.