page_title: Bear Gulch Limestone
hierarchical_section_title: Bear Gulch Limestone
caption_attribution_description: Deutsch: Falcatus falcatus, Falcatidae, Unterkarbon, Montana, USA; Staatliches Museum für Naturkunde Karlsruhe, Deutschland. English: Falcatus falcatus, Falcatidae, Lower Carboniferous, Montana, USA; Staatliches Museum für Naturkunde Karlsruhe, Germany. Français&#160;: Falcatus falcatus (Falcatidae, carbonifère inférieur). Récolté dans le Montana (États-Unis), et exposé dans le Muséum d'Histoire Naturelle de Karlsruhe, en Allemagne.
context_page_description: The Bear Gulch Limestone in Montana is a fossiliferous lagerstätte, a limestone layer laid down in the Bashkirian Stage of the early Pennsylvanian epoch of the Carboniferous period, about 318 mya.
  This lens of limestone was laid down in a surrounding matrix that indicates a landscape of mudflats and braided channels in fresh and brackish water, in an arid climate. Magnetic orientation of particles relative to the bedding planes of the strata suggest a latitude of about 12°N, a tropical siting.
context_section_description: The Bear Gulch Limestone in Montana is a fossiliferous lagerstätte, a limestone layer laid down in the Bashkirian Stage of the early Pennsylvanian epoch of the Carboniferous period, about 318 mya.
  This lens of limestone was laid down in a surrounding matrix that indicates a landscape of mudflats and braided channels (linear sandstone seams) in fresh and brackish water, in an arid climate (gypsum formation). Magnetic orientation of particles relative to the bedding planes of the strata suggest a latitude of about 12°N, a tropical siting.
caption: Falcatus falcatus
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