Omanyte can be gotten at the Cinnibar Island Pokemon Lab. You have to revive a Helix Fossil, which you can get in Mt. Moon, to get one.
No you can't
at level 40
The helix fossil, when revived, will become Omanyte.
you cant only via trade or fossil
Omanyte evolves into Omastar on level 40, so i suggest you battle a lot. for more info, go to www.serebii.net.
In Pokemon LeafGreen, the Dome Fossil can be revived into Kabuto, and the Helix Fossil can be revived into Omanyte.
Horsea, Tentacool, Seel, Kabuto or Omanyte, Magikarp, Gyrados, Staryu.
You'd probably need to trade for Kabutops.
u obtain 1 of 2 fossils: the helix fossil (omanyte) or the dome fossil (kabuto).
You can't get Omanyte in-game in Pokemon Silver.
You can get Omanyte ONLY through trade.
omanyte is an rock/water Pokemon who start as a fossil