Dome Fossil

The Dome Fossil as represented in current Generations

The Dome Fossil was one of the two fossils available to Red during his trip through Mt. Moon early on in the game. The other option was the Helix Fossil which was chosen by Red. The Dome Fossil was considered the counterpart to the Helix Fossil, being the dark to the Helix's light in terms of Lore. Kabuto is the pokemon that is recovered from the Dome Fossil if chosen and reanimated on Cinnabar Island late in the game,

History

Near the end of the Mt. Moon cave Red was unable to progress to the exit of the tunnel before choosing one of two fossils that blocked the path to the exit. As mentioned the choices were the Dome Fossil and the Helix fossil. Red opted to choose the Helix Fossil which soon became a symbol of chaos and the official mascot of Anarchy, while the Dome Fossil represented Democracy (or Domecracy as it was referred to by Helixians) and was blamed for all the unfortunate events that occured to red throughout the journey such as pokemon being released. 

As of the Randomized Firered Playthrough, however, a less evil interpretation of Dome has arisen. As Alice picked the Dome Fossil as opposed to the Helix Fossil, it is believed that neither Dome and Helix are evil, but different sides of the same coin. As the world was far too chaotic, it required order and Dome, which is why Alice chose it. 

Disciples of Dome

The Disciples of Dome are the followers of the Dome Fossil and later Kabutops, in a similar vein to the Church of Helix, which is usually considered an ideological foe of the Disciples of the Dome.