A fern is any of a group of plants classified in the phylum of Pteridophyta. Most species grow in damp environments, in between rocks or under trees. This example has survived to our day with no changes since the beginning of the Carboniferous period. Along with leaves, the fossil record also provides specimens of fern spores. Spores are the single-celled reproductive bodies existing in some plants that are highly resistant to negative conditions. Ferns that reproduce through spores bear sporangia under their leaves that contain these cells. Pictured is the underside of a fern leaf, which possesses the sporangia. For hundreds of millions of years, ferns have been reproducing in the same way and have preserved their physical features. Evolutionists, who claim that living species have gradually developed and constantly change, cannot explain this situation in any convincing scientific manner. This unchanging state of living species" structure shows that evolution has never occurred, that our Lord created them all.