Lost Ossidon
Variant
Overview
The Lost Ossidon is a large carnivorous variant creature. It can be carried by Tusoteuthis for transport across long distances. This relationship allows for strategic deployment in aquatic or remote areas where other mounts cannot reach.
It is primarily encountered as a unique ecological threat rather than a tamed utility creature, given its untamable nature and specialized environmental role.
Spawn Locations
Lost Ossidon does not currently spawn on any ARK: Survival Ascended map, or spawn data is not yet available.
Taming
The Lost Ossidon cannot be tamed.
Lost Ossidon is not tamable.
Drops & Harvest Resources
Killing the Lost Ossidon yields Hide, Raw Meat, Raw Prime Meat, Keratin, and Pelt. The Hatchet is the best tool for harvesting Hide, Keratin, and Pelt, while Raw Meat and Raw Prime Meat are best gathered using the Pick and Dino (Prime) respectively.
| Resource |  Pick |  Hatchet |
|---|---|---|
| 40%~21~17 hits | 60%~32~13 hits | |
| 60%~24~17 hits | 40%~16~13 hits | |
| 3%~1~17 hits | 2%~1~13 hits | |
| 5%~3~17 hits | 8%~4~13 hits | |
| 3%~2~17 hits | 5%~3~13 hits |
Estimates based on game-extracted data (weights, quantities, harvest multipliers, damage type chains). Each harvest event independently rolls each resource - higher weight = higher drop chance. Actual yields vary with RNG.
Damage Resistances
The Lost Ossidon has a critical vulnerability to spike walls, taking +400% more damage. It also suffers +120% more damage from Instant HurtDinos and +55% from Melee DmgMetal RaidDino attacks. Conversely, it is fully immune to Mining Drill Harvest damage and takes -50% from certain melee and ranged sources like Ranged Turret Small DefensePlant.
Kill XP
Wild Kill (1.25×)60 base × 15.9 level × 4 × 1.25× wild kill × 1× server
Server Settings(Game.ini)
Official servers use non-1× defaults; the values above already reflect official rates.
| Stat | Base (Lv.1) | Wild +/Lv | Tamed +/Lv |
|---|---|---|---|
 Health | 1430.0 | +286.00 | +4.00% |
 Stamina | 420.0 | +42.00 | +2.00% |
 Torpidity | 1550.0 | +93.00 | +0.00% |
 Oxygen | 150.0 | +15.00 | +2.00% |
 Food | 3000.0 | +300.00 | +2.00% |
 Weight | 500.0 | +10.00 | +0.80% |
 Melee Damage Multiplier | 100.0% | +5.00% | +10.00% |
 Speed Multiplier | 100.0% | +0.00% | +1.00% |
Hitbox Multipliers
The Head hitbox has a damage multiplier of 0.75x, making it less effective to target than the body. Focus on body shots for consistent torpor or damage application during encounters.
Can Damage
Can break Thatch and Wood. Build at least in Stone.
Thatch
Wood
Stone
Metal
Tek| Attack | Base | Thatch | Wood | Stone | Metal | Tek |
|---|---|---|---|---|---|---|
| ClawsCarnivore Large | 95 | 522.5 | 285.0 | — | — | — |
| BiteCarnivore Large | 95 | 522.5 | 285.0 | — | — | — |
Numbers reflect base melee at level 1, 100% TE, no imprint. The damage calculator lets you scale by melee %, server multipliers, and pick a specific structure for exact hit counts.
Tools & Guides
Lost Ossidon Tips & Tricks
The Lost Ossidon takes +400% more damage from spike walls, making them extremely effective for defense.
It is immune to Mining Drill Harvest damage, rendering mining drills useless in combat.
It can be carried by Tusoteuthis, allowing for underwater mobility and surprise attacks.
It takes +55% more damage from Melee DmgMetal RaidDino sources, such as metal-tier weapons.
Its roar ability has a 0.25-second cooldown, enabling frequent use for intimidation or AI disruption.
This page details the Lost Ossidon's stats, taming requirements, breeding behavior, harvest yields, and combat properties. For further planning, refer to the taming calculator, breeding calculator, and spawn map tools available on the site.