Mosses were assumed for years to play a minor role in ecology, but we now know they play a critical role in the earth’s complex biomass ecosystem. Without mosses and their relatives life probably could not exist on our planet unless the Creator supplied another means to carry out their functions. What was once regarded as an independent class of plants is now recognized as a part of a complex interrelated ecosystem. If any one part is too seriously disrupted, then the whole is threatened. These tiny plants have design features they share with the rest of the Kingdom Plantae, as well as unique characteristics of their own. Mosses exist in the lowest parts of the fossil record and are not much different today. The lack of evidence for moss evolution is common to most plants and poses a significant problem for evolutionary naturalism.