Here's a list of all the monsters in the Monsterdex

001 Jelling

002 Milia

003 Jelliling

004 Chochoni

005 Dramilia

006 Shroom

007 Death Shroom

008 Mantis

009 Floral

010 Manuk

011 Bungon

012 Eggear

013 Sehoo

014 Orc

015 Greater Orc

016 Zombie Orc

017 Skeleton Orc

018 Will’o

019 Fen

020 Manore

021 Heat Ninja

022 Freeze Ninja

023 Assault Ninja

024 Green Belena

025 Blue Belena

026 Strike

027 Tyrma

028 Sandwoman

029 Desert Warrior

030 Lamisis

031 Cherry Hunter

032 Menas

033 Stinger

034 Deadly Wraith

035 Zealodarth

036 Evil Witch

037 Liace

038 Hollow Night

039 Black Night

040 Heimdall Knight

041 Shadow Liace

042 Drifter

043 White Knight

044 Evil Illusion

045 Instructor Sif

046 Dropling

047 Nine-tailed Cat

048 Golden Fox

049 Zeno Orc

050 Vampy

051 Kraken

052 Drake

053 Pharoah

054 Carmilla

055 Crimson Fox

056 Epsilon

057 Tigirl

058 Evil Lord

059 Eris

060 Lisa Himmelgahn

061 Valkyrie

These are all the evolution paths monsters go through, monsters not on the list cannot evolve.

Jelling>Jelliling>Dropling

Milia>Dramilia>Vampy>Carmilla

Chochoni>Cherry Hunter

Shroom>Death Shroom

Floral>Menas

Manuk>Bungon

Nine-Tailed Cat>Golden Fox>Crimson Fox

Orc>Greater Orc>Heroic Orc (Epsilon)

Zombie Orc>Dark Drake

Skeleton Orc>Zeno Orc

Will’o>Deadly Wraith

Manore>Kraken

Assault Ninja>Drifter

Green Belena>Blue Belena>Strike

Tyrma>Tigirl

Sandwoman>Stinger

Desert Warrior>Pharaoh

Zealodarth>Drake

Evil Witch>Zeno Orc

Liace>Shadow Liace

Hollow Knight>Heimdall Knight

Black Knight>White Knight

Evil Illusion>Sovereign’s Shadow