5 fossil PokémonGen 1 · KantoUpdated NOV 12, 2026

Fossil Pokémon in Yellow

Old Amber is the gift in Yellow: a scientist inside the Pewter Museum of Science hands it over after Cut opens the path to the back door. That’s Aerodactyl, one of 5 fossil Pokémon. Beat Mt. Moon’s Super Nerd and he lets you leave with Helix or Dome, never both.

Pick one 2
Gift 1
Revive: Pokémon Lab, Cinnabar Island, Lv. 30

The list

All 5 fossil Pokémon in Yellow, across 3 fossil lines

Omanyte grows into Omastar and Kabuto into Kabutops, and your Mt. Moon pick decides which of those two you revive. Old Amber covers Aerodactyl, so each Yellow save ends with Aerodactyl and one shell line.

All 5 fossil Pokémon in Yellow, with types and base stats
		Type
#0138	Omanyte	Rock/Water type
#0139	OmastarFossil Helix Fossil	Rock/Water type
#0140	Kabuto	Rock/Water type
#0141	KabutopsFossil Dome Fossil	Rock/Water type
#0142	AerodactylFossil Old Amber	Rock/Flying type

Where to find them

How to find and revive every fossil in Yellow

The Super Nerd holds on to whichever fossil you pass over, so the Mt. Moon call sticks. Carry your pick and the Old Amber to Cinnabar Island, the only stop that brings them back.

What each fossil revives into

Pick one: Helix Fossil or Dome Fossil

The other fossil

Old AmberAerodactyl

Mt. Moon B2F: pick one fossil2

Helix Fossil
Dome Fossil

Beat the Super Nerd who guards them.

TipHe keeps the one you leave

Mt. Moon B2F as drawn for Pokémon Yellow — The fossils sit side by side in the small room at the top left, just above the Super Nerd

Pewter Museum of Science: a gift1

Old Amber

You needCut

Clear the path to the back door.
Inside, talk to the scientist.

Pewter Museum of Science in Pokémon Yellow — The scientist stands at the top of the right-hand room, beside a small round table below the bookshelves

Where to revive them

Pokémon Lab, Cinnabar IslandRevived at Lv. 30

Give your fossil to the scientist.
Walk out, then come back and talk to him again.

Fossil room of the Cinnabar Island lab in Pokémon Yellow — One scientist stands near the machines at the top, and the other stands on the right below the big red machine

Compare

Stats compared in Yellow

OmastarRock/Water type
HP
70
Attack
60
Defense
125 (highest of the 3)
Speed
55
Special
115 (highest of the 3)
Top stat Defense 125 Weak to Electric Grass Fighting Ground
KabutopsRock/Water type
HP
60
Attack
115 (highest of the 3)
Defense
105
Speed
80
Special
70
Top stat Attack 115 Weak to Electric Grass Fighting Ground
AerodactylRock/Flying type
HP
80 (highest of the 3)
Attack
105
Defense
65
Speed
130 (highest of the 3)
Special
60
Top stat Speed 130 Weak to Water Electric Ice Rock