Calcitine

Calcitine has split from it's ancestor. Having spread to the Sublyme Limestone Caves, the tealspot cryoutine needed alternate means of nutrition, as there was little to no sunlight and no other lifeforms to infect parasitically. Eventually, tealspot cryoutine evolved to use calcite, a major part of limestone, as an energy source. As such, the calcitine has spread throughout the entire cave system. Calcitine live on rocks, and stalagmites. They've yet to spread to stalactites and the cave ceiling. Calcitine use the carbon from carbon-dioxide as a carbon-source, producing oxygen as a waste product.