Changes to Hoenn After Ancient Pokemon Battle - Pokemon Omega Ruby and Alpha Sapphire Guide - IGN

Hoenn Pokedex Delta by AlextheStarChild on DeviantArt

Pokedex Completion Rewards - Achievements - Extra Activities, Pokémon: Omega Ruby & Alpha Sapphire

Pokémon Omega Ruby & Alpha Sapphire - National Pokédex

Plusle fact of the day - Plusle #311 Every Pokedex entry besides

Best Buy: Prima Games Pokémon Omega Ruby and Pokémon Alpha Sapphire Official National Pokédex (Game Guide) Multi 9781101898284

Ruby

Heavy Machine Gun, pokémon Emerald, hoenn, Pokémon Ruby and

Full Sheet View - Pokemon Omega Ruby / Alpha Sapphire - 3rd Generation Pokémon omega ruby and alpha sapphire, Pokemon omega ruby, Omega ruby alpha sapphire

Pokémon Omega Ruby/Alpha Sapphire → Pokédex Completion → Hoenn Pokédex Caught

Here's a map showing locations of all catchable Pokémon in Omega