page_title: Polystrate fossil
hierarchical_section_title: Polystrate fossil
caption_attribution_description: English: Ancient in situ lycopsid, probably Sigillaria, with attached stigmarian roots. Specimen is from the Joggins Formation (Pennsylvanian), Cumberland Basin, Nova Scotia. Français&#160;: Tronc de lycopside fossilisé (probablement Sigillaria, avec collet et racines stigmariennes, trouvé dans la Formation de Joggins (Pennsylvanien), Bassin de Cumberland, Nouvelle-Écosse Deutsch: „In situ“ überlieferter Ausguss („Steinkern“) des Stumpfes eines Bärlapp-Baumes, wahrscheinlich Sigillaria, mit ansitzendem Wurzelwerk (Stigmaria). Das Exemplar befindet sich in der Joggins-Formation (Oberkarbon) des Cumberland-Beckens, Nova Scotia.
context_page_description: A polystrate fossil is a fossil of a single organism that extends through more than one geological stratum. This term is typically applied to "fossil forests" of upright fossil tree trunks and stumps that have been found worldwide, i.e. in the Eastern United States, Eastern Canada, England, France, Germany, and Australia, typically associated with coal-bearing strata. Within Carboniferous coal-bearing strata, it is also very common to find what are called Stigmaria within the same stratum. Stigmaria are completely absent in post-Carboniferous strata, which contain either coal, polystrate trees, or both. The word polystrate is not a standard geological term. This term is typically found in creationist publications.
context_section_description: A polystrate fossil is a fossil of a single organism (such as a tree trunk) that extends through more than one geological stratum. This term is typically applied to "fossil forests" of upright fossil tree trunks and stumps that have been found worldwide, i.e. in the Eastern United States, Eastern Canada, England, France, Germany, and Australia, typically associated with coal-bearing strata. Within Carboniferous coal-bearing strata, it is also very common to find what are called Stigmaria (root stocks) within the same stratum. Stigmaria are completely absent in post-Carboniferous strata, which contain either coal, polystrate trees, or both. The word polystrate is not a standard geological term. This term is typically found in creationist publications.
caption: Ancient in situ lycopsid, probably Sigillaria, with attached stigmarian roots.  Specimen is from the Joggins Formation (Pennsylvanian), Cumberland Basin, Nova Scotia.
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