Editing Lepidodendron (section)

=== Decay ===
[[File:Estonian Museum of Natural History Specimen No 193541 photo (g23 g23-26 1 jpg).jpg|thumb|''Lepidodendron sp.'' bark from the [[Estonian Museum of Natural History]].|213x213px]]
Different [[fossil]] genera have been described to name the various levels of decay in ''Lepidodendron'' bark fossils. The name ''Bergeria'' describes stems that have lost their epidermises, ''Aspidiariu'' is used when cushions have been removed by deep decay, and ''Knorria'' is used when the leaf cushions and the majority of cortical tissues has decayed, with a shallow "fluted" surface remaining. However, it has been suggested that these are more likely growth forms than preserved bark types, as entire fossilized trunks have been discovered with dissimilar forms; if decay is assumed to be constant throughout the trunk, then different forms indicate growth rather than levels of decay. It is likely that the trunk of ''Lepidodendron'' lycopsids were subject to the growth forms ''Knorria'', ''Aspidiaria'', and ''Bergeria'' progressing up the trunk, respectively.<ref>{{cite journal |title= A rediscovered 114-foot Lepidodendron from Bolton, Lancashire |author= Thomas, B.A. and Watson, Joan |journal= Geological Journal |volume= 11 |number= 1 |pages= 15–20 |year= 1976 |publisher= Wiley Online Library |doi= 10.1002/gj.3350110102 |bibcode= 1976GeolJ..11...15T }}</ref>