Pezizomycotina contains the filamentous ascomycetes and is a subphylum of the Ascomycota (fungi that form their spores in a sac-like ascus). It is more or less synonymous with the older taxon Euascomycota. These fungi reproduce by fission rather than budding and this subdivision includes almost all the ascus fungi that have fruiting bodies visible to the naked eye (exception: genus Neolecta, which belongs to the Taphrinomycotina). Paleopyrenomycites from the Early Devonian Rhynie Chert is the oldest known fossil member of Pezizomycotina, although its position within this subphylum is unclear.