Dex completion
Helix Fossil
Effect
Give to a scientist in the Mining Museum in Oreburgh City or the Museum of Science in Pewter City to receive an Omanyte.
Pokémon Revived From the Helix Fossil
Revived Pokémon: Omanyte
Where to Find
▲
Pokemon Red & Pokemon Blue & Pokemon Yellow
Area
B2F
Choose the Helix Fossil at Mt. Moon B2F; only one fossil from this choice can be taken.
Repeatable: No
Pokemon FireRed & Pokemon LeafGreen
Area
B2F
Choose the Helix Fossil at Mt. Moon B2F; only one fossil from this choice can be taken.
Repeatable: No
Pokemon Diamond & Pokemon Pearl
Find the Helix Fossil while digging in Sinnoh Underground.
Requirements- National Pokedex
Repeatable: Yes
Pokemon Platinum
Find the Helix Fossil while digging in Sinnoh Underground.
Requirements- National Pokedex
Repeatable: Yes
Pokemon HeartGold & Pokemon SoulSilver
Version Exclusive: Yes
Area
exterior breakable rocks
Possible random find from Rock Smash at Ruins of Alph exterior breakable rocks.
Requirements- Pokemon HeartGold only
Repeatable: Yes
Pokemon Black & Pokemon White
Possible daily random fossil gift from an NPC at Twist Mountain.
Requirements- Defeat Ghetsis
Repeatable: Yes
Pokemon Black 2 & Pokemon White 2
Possible daily random fossil gift from an NPC at Twist Mountain.
Requirements- Defeat Iris
Repeatable: Yes
Version Exclusive: Yes
Area
What is the Real Price? Funfest Mission
Possible reward from Entralink What is the Real Price? Funfest Mission.
Requirements- Pokemon White 2 only
Repeatable: Yes
Area
Antique Shop mystery boxes
Possible random reward from Join Avenue Antique Shop mystery boxes.
Requirements- Defeat Iris
- Join Avenue Rank 15
Repeatable: Yes
Pokemon X & Pokemon Y
Version Exclusive: Yes
Possible random find from Rock Smash at Glittering Cave.
Requirements- Hall of Fame
- Pokemon Y only
Repeatable: Yes
Pokemon Omega Ruby & Pokemon Alpha Sapphire
Version Exclusive: Yes
Possible random find from Rock Smash at Mirage Spots.
Requirements- Defeat or capture Kyogre
- Pokemon Alpha Sapphire only
Repeatable: Yes
Pokemon Ultra Sun & Pokemon Ultra Moon
Version Exclusive: Yes
Area
Olivia's jewelry shop
Purchase the Helix Fossil at Konikoni City Olivia's jewelry shop.
Requirements- Pokemon Ultra Sun only
Repeatable: No
Area
Isle Aphun
Possible random treasure from Poké Pelago Isle Aphun.
Repeatable: Yes
Pokemon: Let's Go, Pikachu! & Pokemon: Let's Go, Eevee!
Area
B2F
Choose the Helix Fossil at Mt. Moon B2F; only one fossil from this choice can be taken.
Repeatable: No
Area
2F rare-item spawn points
Possible recurring random field item at Cerulean Cave 2F rare-item spawn points.
Requirements- Hall of Fame
Repeatable: Yes
Pokemon Brilliant Diamond & Pokemon Shining Pearl
Find the Helix Fossil while digging in Grand Underground.
Requirements- Defeat or capture Dialga/Palkia at Spear Pillar
Repeatable: Yes
Oak's Notes
Revived Pokemon
The Helix Fossil revives into Omanyte, which evolves into Omastar at level 40.
Omanyte 
Omastar Playthrough Notes
Slow special attacker and physical tank.
A dependable choice when the team needs Water-type damage and a sturdy answer to physical attacks. Omastar's high Defense and Special Attack make it much easier to use than its low Speed suggests, especially on a rain team with Swift Swim
Very powerful in Red, Blue, and Yellow before the special stat was split into Special Attack and Special Defense.
Usually the safer choice for players who want immediate special damage.
Strengths and Weaknesses
Strengths: Strong special Water attacks (115). Very high physical Defense (125). Useful Rock/Water coverage. Can make good use of Ice-type coverage in games where the relevant TM is available.
Weaknesses: Four-times weakness to Grass. Slow. Special bulk is only average. Often obtained late enough that it needs extra training.
Choice Context
Choose the Helix Fossil for a bulky special attacker. Choose the Dome Fossil for a physical attacker.
Kabutops becomes much easier to use from Generation IV onward, when physical Water moves can use its high Attack.
Helix Fossil is usually easier for a normal story playthrough:
Revival Locations
Red/Blue/Yellow: Revive at Pokemon Lab in Cinnabar Island. Revives at level 30.
FireRed/LeafGreen: Revive at Pokemon Lab in Cinnabar Island. Revives at level 5.
Diamond/Pearl: Revive at Oreburgh Mining Museum in Oreburgh City. Revives at level 20.
Platinum: Revive at Oreburgh Mining Museum in Oreburgh City. Revives at level 20.
HeartGold/SoulSilver: Revive at Pewter Museum of Science in Pewter City. Revives at level 20.
Black/White: Revive at Nacrene Museum in Nacrene City. Revives at level 25.
Black 2/White 2: Revive at Nacrene Museum in Nacrene City. Revives at level 25.
X/Y: Revive at Ambrette Fossil Lab in Ambrette Town. Revives at level 20.
Omega Ruby/Alpha Sapphire: Revive at Devon Corporation 2F in Rustboro City. Revives at level 20.
Ultra Sun/Ultra Moon: Revive at Fossil Restoration Center in Route 8. Revives at level 15.
Let's Go, Pikachu!/Let's Go, Eevee!: Revive at Pokemon Lab in Cinnabar Island. Revives at level 44.
Brilliant Diamond/Shining Pearl: Revive at Oreburgh Mining Museum in Oreburgh City.
Flavor Text
Emerald
A piece of an ancient marine POKéMON’s seashell.
Firered Leafgreen
A fossil of an ancient, seafloor- dwelling POKéMON. It appears to be part of a seashell.
Diamond Pearl / Platinum / Heartgold Soulsilver / Black White / Black 2 White 2
A fossil of an ancient Pokémon that lived in the sea. It appears to be part of a seashell.
X Y / Sun Moon / Ultra Sun Ultra Moon / Lets Go Pikachu Lets Go Eevee / Sword Shield
A fossil from a prehistoric Pokémon that once lived in the sea. It might be a piece of a seashell.
Overview
- Cost
- 7,000
- misc
- Category
- Dex completion
- Fling Power
- 100
Attributes
Underground