Fungi are complex life-forms that play a major role in modern ecology. A wide variety of fungal types exists from microscopic yeasts to large mushrooms. The estimated 100,000 species of fungi comprise approximately one-quarter of the earth’s entire biomass. The fungus fossil record, which is examined in this paper, does not provide evidence of neo-Darwinism for the members of the Kingdom Fungi. As a result of this lack of evidence, speculation by Darwinists has resulted in many conflicting theories of fungus evolution, all unconstrained by fossil evidence.