Preserve them and study them.
You can find the Scientist in the Oreburgh Mining museum that is in Oreburgh. He is behind the desk on around the top left hand side.
Revive the fossil from the scientist in Cinnabar Island.
in the centre part of Mt moon, to get there you have to battle a scientist or fanatic and behind him are the fossils
It turns into a Lileep when you give the root fossil to the scientist in Rustboro City.
In "Fossil Fighters," you can find Hoplo fossils in the rivers and swamps of the Dino Valley area. Look for specific fossil sites that are indicated by the presence of water. Once you locate a site, use your digging tools to carefully excavate the fossils. After collecting enough pieces, you can assemble Hoplo in the Fossil Center.
named by the scientist who found the fossil evidence of said creature
There is no ar code to get omantye in fire red. In Mt. Moon you will find a scientist and he will give you a choice of two fossils, the helix fossil or the dome fossil. if you want Kabuto choose the dome fossil, and if you want omantye choose the Helix Fossil.
To obtain Gaudry in Fossil Fighters: Champions, you need to dig up the Gaudry fossil pieces from specific dig sites, particularly in the "Boneyard." Once you have collected all the fossil pieces, return to the Fossil Center to assemble them into the Gaudry dinosaur. Make sure to use the right tools and techniques while digging to increase your chances of finding the fossil pieces.
You can obtain the Amaura Fossil in Pokémon Sword and Shield by talking to a scientist in the Wild Area in the Stow-on-Side town, who will give it to you. You can then revive the Amaura Fossil at the Fossil Restoration Center in Stow-on-Side to obtain the Pokémon Amaura.
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
carbon dating
Place it in a time period