The Relationship Between Continental Landscape Evolution and the Plant-Fossil Record: Long Term Hydrologic Controls on Preservation

Abstract Continental depositional environments preserve the majority of the macrofloral record since the advent of land-plant colonization in the mid-Paleozoic, and wetland representatives are encountered more commonly than those that grew under more seasonal conditions. It has been assumed that preservation potential and future recovery of plant debris are high once detritus is introduced into any appropriate environment of deposition (e.g., fluvial-lacustrine or paludal setting), regardless of prevailing associated climate, sediment load, or geochemistry at the time of emplacement or interval thereafter. If a plant fossil is identified in any part of a stratigraphic interval, even if it occurs solely as an impression, it has been presumed that favorable conditions persisted over time to facilitate this record. Conversely, the