title: Fossil mycelium with clamp connections from the middle pennsylvanian.
abstract: A mycelium with clamp connections and chlamydospores has been discovered within the wood of a Middle Pennsylvanian fern. This suggests that forms extant in the middle of the Pennsylvanian had life cycles conparable to some modern Basidiomnycetes.
authors.forename: R L
authors.initials: RL
authors.lastname: Dennis