Strange fossil biomes

Hi 

In minecraft, there are fossils but they have little use,I think there should be a biome dedicated to fossils.It would have mobs like the skeleton spider, the slorex (a four limbed  creature that wear fossils as armour),the slim (a semi-aquatic creature that also wear fossils) and the florm (a worm that have one eye that can shoot lasers).This biome is decorated with coal blocks,fossils and drip stone.It spawn in level familiar to the deep dark.The reason you would want to come here is because somewhere in the biome is a lake with magic water which can be used for enchantments.Over all this biome would be scary and fun.