cinnabar island --
You have to take the Helix or Dome fossil you found in Mount Moon to Cinnabar Island's Pokemon laboratory. You can also take the Old Amber the scientist gives you in the Pewter Museum's back door. You need the HM cut to get to the Museum's back door.
Helix gives you Omanyte
Dome gives you Kabuto
Old Amber gives you Aerodactyl
Root Fossil Claw Fossil Helix Fossil Dome Fossil Old Amber Armor Fossil Skull Fossil Rare Bone
u obtain 1 of 2 fossils: the helix fossil (omanyte) or the dome fossil (kabuto).
First of all you need to have picked the dome fossil in mt moon, if you didn't get it get a kabuto from another firered or leafgreen, if you did bring the dome fossil to cinnibar island and go to the research lab go to the far right room and speak to the scientist near the machine he will take your dome fossil and then go outside of the lab then come back in and talk to the lab guy again and he will give you a kabuto. Now train kabuto to level 40 and it will evolve to kabutops.
you have to dig for a long time in the walls in the underground and you will dig a dome fossil
You can choose the dome fossil at Mt Moon once you defeat the super nerd
If taken to cinnbar island's research lab you can revive the Pokemon inside the fossil which will be Kabuto.
The helix or dome fossil can be chosen at the end of Mt moon CAUTION you can only choose one fossil.
Root Fossil Claw Fossil Helix Fossil Dome Fossil Old Amber Armor Fossil Skull Fossil Rare Bone
Helix Fossil is a Omanyte. Dome Fossil is a Kabuto. The Other one is a Aerodactyl. The Aerodactyl fossil is in the Pewter City Museum.
Neither the Helix Fossil nor the Dome Fossil will become an aerodactyl. In order to obtain an aerodactyl you must revive a pokemon from the Old Amber item which can be obtained in the Pewter City Museum.
u obtain 1 of 2 fossils: the helix fossil (omanyte) or the dome fossil (kabuto).
Kabuto is the dome fossil
u have to go to the underground dig a dome fossil go to oreburg and revive it in the museum
The Dome Fossil can be revived into the pokemon kabuto.
Before leaving mt moon, choose the dome fossil. Take it to the scientist (on cinnabar i think), and he'll revive your fossil into a Kabuto. Train it to level 40 and it'll evolve :D
Kabuto is in the dome fossil and Omanyte is in the helix fossil.
Use rock smash on the rocks in the Ruins of Alph until you find the dome fossil, then take it to the scientist in the Pewter Museum then he will extract the kabutoget a dome fossil, then bring it to pewter City and revive it