Grass / Poison
LV 16
LV 32
#001 Bulbasaur   #002 Ivysaur   #003 Venusaur
Fire
LV 20
LV 36   Fire / Flying
#004 Charmander   #005 Charmeleon   #006 Charizard
Water
LV 16
LV 36
#007 Squirtle   #008 Wartortle   #009 Blastoise
Bug
LV 7
LV 10   Bug / Flying
#010 Caterpie   #011 Metapod   #012 Butterfree
Bug / Poison
LV 7
Normal / Flying
LV 10
LV 18
LV 36
Normal
LV 20
Normal / Flying
LV 20
Poison
LV 22
Friendly Evolution
Thunder Stone
Egg   Electric
#013 Weedle  #014 Kakuna   #015 Beedrill
#016 Pidgey   #017 Pidgeotto   #018 Pidgeot
#019 Rattata   #020 Raticate
#021 Spearow   #022 Fearow
#023 Ekans   #024 Arbok
#172 Pichu     #025 Pikachu     #026 Raichu
#155 Pichu     #156 Pikachu     #157 Raichu
Ground
LV 22
#027 Sandshrew   #028 Sandslash
#112 Sandshrew   #113 Sandslash
Poison
LV 16
Moon Stone   Poison / Ground
#029 Nidoran Female  #030 Nidorina   #031 Nidoqueen
Poison
LV 16
Moon Stone   Poison / Ground
#032 Nidoran Male   #033 Nidorino   #034 Nidoking
Fire
Moon Stone
#173 Cleffa     #035 Clefairy     #036 Clefable
Egg   Normal
Egg   Normal
#174 Igglybuff    #039 Jigglypuff     #040 Wigglytuff
#137 Igglybuff    #138 Jigglypuff     #139 Wigglytuff
Fire Stone
Friendly Evolution
Friendly Evolution
Moon Stone
#037 Vulpix   #038 Ninetales
#153 Vulpix   #154 Ninetales
Poison / Flying
LV 22
Friendly Evolution
#041 Zubat     #042 Golbat     #169 Crobat
#063 Zubat    #064 Golbat     #065 Crobat
Grass / Poison
LV 21
Leaf Stone
Sun Stone   Grass
#043 Oddish     #044 Gloom     #045 Vileplume     #182 Bellossom
#088 Oddish    #089 Gloom     #090 Vileplume     #091 Bellossom
Bug / Grass
LV 24
#046 Paras     #047 Parasect
#048 Venonat     #049 Venomoth
Bug / Poison
LV 31
Ground
LV 26
#050 Diglett     #051 Dugtrio
Normal
LV 28
Water
LV 33
Fighting
LV 28
Fire
Fire Stone
Water
LV 25
Water Stone   Water / Fighting
King's Rock + Trade
#060 Poliwag     #061 Poliwhirl     #062 Poliwrath     #186 Politoed
#058 Growlithe     #059 Arcanine
#054 Psyduck     #055 Golduck
#158 Psyduck    #159 Golduck
#052 Meowth     #053 Persian
#056 Mankey     #057 Primeape

Pokemon Evolutions Key -
Bold names - "Basic" pokémon
Regular names - "Evolved" pokémon
Underlined names - evolution "Choice"
"Mousing" over pictures will reveal "Type" or "Evolution".
Some Pokemon only appear in RUBY or SAPPHIRE. Their names and game numbers appear in purple if they are in both games,
red if they are only in Ruby or blue if they are only in Sapphire.
Psychic
LV 16
Trade
Fighting
LV 28
Trade
Grass / Poison
LV 21
Leaf Stone
Water / Poison
LV 30
#063 Abra     #064 Kadabra     #065 Alakazam
#039 Abra    #040 Kadabra     #041 Alakazam
#069 Bellsprout     #070 Weepinbell     #071 Victreebel
#072 Tentacool     #073 Tentacruel
#066 Tentacool    #067 Tentacruel
#066 Machop     #067 Machoke     #068 Machamp
#073 Machop     #074 Machoke     #075 Machamp