Pre‐Cretaceous Agaricomycetes yet to be discovered: Reinvestigation of a putative Triassic bracket fungus from southern Germany

Agaricomycetes are major components of extant terrestrial ecosystems; however, their fruiting bodies are exceedingly rare as fossils. Reinvestigation of a peculiar fossil from Late Triassic sediments of southern Germany interpreted as a bracket fungus revealed that this fossil in fact represents a wood abnormality, resulting from injury to the cambium and subsequent callus growth in a Baieroxylon ‐like ginkgoalean wood. As a result, the fossil record of the Agaricomycetes does not yet pre‐date the Early Cretaceous, suggesting a late diversification of basidiomycetes possessing large fruiting bodies. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)