Onix (Pokémon GO 36) - Bulbapedia, the community-driven Pokémon encyclopedia

Cyndaquil (Pokémon) - Bulbapedia, the community-driven Pokémon encyclopedia

Diglett (Pokémon) - Bulbapedia, the community-driven Pokémon encyclopedia

Onix, Pokémon GO Wiki

What is Onix's evolution chart? - Quora

Pokemon 4040 Giratina Origin Pokedex: Evolution, Moves, Location, Stats

What does the name 'Shiny' mean in Pokemon X/Y? Why are these rare ones so popular among trainers? - Quora

Sandshrew (Pokémon) - Bulbapedia, the community-driven Pokémon encyclopedia

Graveler (Pokémon) - Bulbapedia, the community-driven Pokémon encyclopedia

Pokemon 2099 Shiny Kingler Pokedex: Evolution, Moves, Location, Stats

Titan Pokémon - Bulbapedia, the community-driven Pokémon encyclopedia

Gengar, PDF, Mythopoeia

Onix (GR3-056) - Bulbapedia, the community-driven Pokémon encyclopedia

Pokemon 6095 Shiny Crystal Onix Pokedex: Evolution, Moves, Location, Stats

Pokemon 12036 Dianeas Pokedex: Evolution, Moves, Location, Stats

History of the Pokémon world (anime) - Bulbapedia, the community-driven Pokémon encyclopedia