Total amount of occupied biome ids: 69
Table of occupied biome ids and their owners
id:name(class)
0 : Ocean (class net.minecraft.world.biome.BiomeGenOcean)
1 : Plains (class net.minecraft.world.biome.BiomeGenPlains)
2 : Desert (class net.minecraft.world.biome.BiomeGenDesert)
3 : Extreme Hills (class net.minecraft.world.biome.BiomeGenHills)
4 : Forest (class net.minecraft.world.biome.BiomeGenForest)
5 : Taiga (class net.minecraft.world.biome.BiomeGenTaiga)
6 : Swampland (class net.minecraft.world.biome.BiomeGenSwamp)
7 : River (class net.minecraft.world.biome.BiomeGenRiver)
8 : Hell (class net.minecraft.world.biome.BiomeGenHell)
9 : Sky (class net.minecraft.world.biome.BiomeGenEnd)
10 : FrozenOcean (class net.minecraft.world.biome.BiomeGenOcean)
11 : FrozenRiver (class net.minecraft.world.biome.BiomeGenRiver)
12 : Ice Plains (class net.minecraft.world.biome.BiomeGenSnow)
13 : Ice Mountains (class net.minecraft.world.biome.BiomeGenSnow)
14 : MushroomIsland (class net.minecraft.world.biome.BiomeGenMushroomIsland)
15 : MushroomIslandShore (class net.minecraft.world.biome.BiomeGenMushroomIsland)
16 : Beach (class net.minecraft.world.biome.BiomeGenBeach)
17 : DesertHills (class net.minecraft.world.biome.BiomeGenDesert)
18 : ForestHills (class net.minecraft.world.biome.BiomeGenForest)
19 : TaigaHills (class net.minecraft.world.biome.BiomeGenTaiga)
20 : Extreme Hills Edge (class net.minecraft.world.biome.BiomeGenHills)
21 : Jungle (class net.minecraft.world.biome.BiomeGenJungle)
22 : JungleHills (class net.minecraft.world.biome.BiomeGenJungle)
23 : JungleEdge (class net.minecraft.world.biome.BiomeGenJungle)
24 : Deep Ocean (class net.minecraft.world.biome.BiomeGenOcean)
25 : Stone Beach (class net.minecraft.world.biome.BiomeGenStoneBeach)
26 : Cold Beach (class net.minecraft.world.biome.BiomeGenBeach)
27 : Birch Forest (class net.minecraft.world.biome.BiomeGenForest)
28 : Birch Forest Hills (class net.minecraft.world.biome.BiomeGenForest)
29 : Roofed Forest (class net.minecraft.world.biome.BiomeGenForest)
30 : Cold Taiga (class net.minecraft.world.biome.BiomeGenTaiga)
31 : Cold Taiga Hills (class net.minecraft.world.biome.BiomeGenTaiga)
32 : Mega Taiga (class net.minecraft.world.biome.BiomeGenTaiga)
33 : Mega Taiga Hills (class net.minecraft.world.biome.BiomeGenTaiga)
34 : Extreme Hills+ (class net.minecraft.world.biome.BiomeGenHills)
35 : Savanna (class net.minecraft.world.biome.BiomeGenSavanna)
36 : Savanna Plateau (class net.minecraft.world.biome.BiomeGenSavanna)
37 : Mesa (class net.minecraft.world.biome.BiomeGenMesa)
38 : Mesa Plateau F (class net.minecraft.world.biome.BiomeGenMesa)
39 : Mesa Plateau (class net.minecraft.world.biome.BiomeGenMesa)
40 : Storage Cell (class appeng.spatial.BiomeGenStorage)
100 : WitchwoodForest (class am2.worldgen.BiomeWitchwoodForest)
126 : Ocean Oil Field (class buildcraft.energy.worldgen.BiomeGenOilOcean)
127 : Desert Oil Field (class buildcraft.energy.worldgen.BiomeGenOilDesert)
129 : Sunflower Plains (class net.minecraft.world.biome.BiomeGenPlains)
130 : Desert M (class net.minecraft.world.biome.BiomeGenDesert)
131 : Extreme Hills M (class net.minecraft.world.biome.BiomeGenHills)
132 : Flower Forest (class net.minecraft.world.biome.BiomeGenForest)
133 : Taiga M (class net.minecraft.world.biome.BiomeGenTaiga)
134 : Swampland M (class net.minecraft.world.biome.BiomeGenSwamp)
140 : Ice Plains Spikes (class net.minecraft.world.biome.BiomeGenSnow)
149 : Jungle M (class net.minecraft.world.biome.BiomeGenJungle)
151 : JungleEdge M (class net.minecraft.world.biome.BiomeGenJungle)
155 : Birch Forest M (class net.minecraft.world.biome.BiomeGenForest)
156 : Birch Forest Hills M (class net.minecraft.world.biome.BiomeGenForest)
157 : Roofed Forest M (class net.minecraft.world.biome.BiomeGenForest)
158 : Cold Taiga M (class net.minecraft.world.biome.BiomeGenTaiga)
160 : Mega Spruce Taiga (class net.minecraft.world.biome.BiomeGenTaiga)
160 : Mega Spruce Taiga (class net.minecraft.world.biome.BiomeGenTaiga)
162 : Extreme Hills+ M (class net.minecraft.world.biome.BiomeGenHills)
163 : Savanna M (class net.minecraft.world.biome.BiomeGenSavanna)
164 : Savanna Plateau M (class net.minecraft.world.biome.BiomeGenSavanna)
165 : Mesa (Bryce) (class net.minecraft.world.biome.BiomeGenMesa)
166 : Mesa Plateau F M (class net.minecraft.world.biome.BiomeGenMesa)
167 : Mesa Plateau M (class net.minecraft.world.biome.BiomeGenMesa)
192 : Tainted Land (class thaumcraft.common.lib.world.biomes.BiomeGenTaint)
193 : Magical Forest (class thaumcraft.common.lib.world.biomes.BiomeGenMagicalForest)
194 : Eerie (class thaumcraft.common.lib.world.biomes.BiomeGenEerie)
195 : Eldritch (class thaumcraft.common.lib.world.biomes.BiomeGenEldritch)