Trade Evolutions

Generation I

 Kadabra Lv.38 > Alakazam
 Machoke Lv.38 > Machamp
 Haunter Lv.38 > Gengar

Generation II

 Poliwhirl Water Stone > Politoed
 Slowpoke Water Stone > Slowking
 Onix Lv.38 > Steelix
 Seadra Lv.48 > Kingdra
 Syther Lv.48 > Steelix
 Porygon Lv.38 > Porygon 2

Generation III

 Clampearl Lvl+Crunch > Huntail
 Clampearl Lvl+Psychic > Gorebyss

Extra Evolutions

Generation I

 Marrowak Lv.48 > Khangaskan

Generation II

Generation III