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The Bear Gulch Limestone is a limestone-rich geological lens in central Montana, renowned for the quality of its late Mississippian-aged fossils. It is exposed over a number of outcrops northeast of the Big Snowy Mountains, and is often considered a component of the more widespread Heath Formation. The Bear Gulch Limestone reconstructs a diverse, though isolated, marine ecosystem which developed near the end of the Serpukhovian age. It is a lagerstätte, a particular type of rock unit with exceptional fossil preservation of both articulated skeletons and soft tissues. Bear Gulch fossils include a variety of fish, invertebrates, and algae occupying a number of different habitats within a preserved shallow bay.

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  • Bear Gulch Limestone (en)
  • Bear-Gulch-Kalkstein (de)
  • Bear Gulch (it)
rdfs:comment
  • Il giacimento di Bear Gulch, in Montana, è considerato uno dei più importanti siti fossiliferi del Carbonifero. Risale alla fine del Mississippiano (inizio del Carbonifero medio, circa 330 milioni di anni fa). Il deposito include alcuni dei più bei fossili di pesci di tutto il Paleozoico, grazie all'insolita completezza dei fossili e alla conservazione anche delle parti molli degli animali. (it)
  • The Bear Gulch Limestone is a limestone-rich geological lens in central Montana, renowned for the quality of its late Mississippian-aged fossils. It is exposed over a number of outcrops northeast of the Big Snowy Mountains, and is often considered a component of the more widespread Heath Formation. The Bear Gulch Limestone reconstructs a diverse, though isolated, marine ecosystem which developed near the end of the Serpukhovian age. It is a lagerstätte, a particular type of rock unit with exceptional fossil preservation of both articulated skeletons and soft tissues. Bear Gulch fossils include a variety of fish, invertebrates, and algae occupying a number of different habitats within a preserved shallow bay. (en)
  • Der Bear-Gulch-Kalkstein ist eine Fossillagerstätte in Montana. Die etwa 325 Millionen Jahre alten Ablagerungen aus dem Namurium, einem Zeitintervall des unteren Karbon (Paläozoikum), geben Einblick in eine Welt der Knorpelfische und frühen Haie. Die Fossilien sind sehr gut erhalten. Insgesamt wurden die Fossilien von etwa 130 Fischarten ausgegraben, aber auch Gliederfüßer, Schwämme, Seesterne, Würmer, Armfüßer, Moostierchen und Weichtiere. Unter den Fischen befinden sich die mit Schulterstacheln bewehrten Haiarten Falcatus und Stethacanthus sowie der ein durophages, auf hartschalige Nahrung hinweisendes Gebiss besitzende aus der Ordnung der Petalodontiformes. und der kaulquappenähnliche sind möglicherweise, mit Sicherheit, Verwandte der Seekatzen. Weitere Fische sind der Quastenflosse (de)
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  • Bear Gulch Limestone (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Belantsea_montana.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Echinochimaera_meltoni_(fossil_fish)_(Bear_Gulch_Limestone,_Upper_Mississippian;_Montana,_USA)_(33784748875).jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/StethacanthusesDB_2.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/20200924_Anderella_parva.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/Ar1050_Perimecturus_rapax_Unt_Karbon_Bear_Gulch_Montana_USA.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Bear_gulch_montana_sea_urchin.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Debeerius.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/Falcatus_falcatus_01.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Harpacanthus2DB.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Heteropetalus_elegantulus_Bear_Gulch_Montana_USA.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Reticycloceras_sp_Carboniferous_Bear_Gulch_Montana_USA_Mo1832b.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Thrinacoselache_gracia.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Typhloesus_fossils_2022.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/†Aenigmacaris_cornigerum_SCHRAM_&_HORNER_1979.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/†Allenypterus_montanus_Unt_Karbon_Bear_Gulch_Montana_USA_Ch927.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/†Caridosuctor_populosum_Unt_Karbon_Bear_Gulch_USA_Ch1056.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/†Discoserra_pectinodon_Unt_Karbon_Bear_Gulch_Montana_USA_Ch2431.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/†Dithyrocaris_rolfei_Unt_Karbon_Bear_Gulch_Montana_USA_Ar2547.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/†Echinochimaera_meltoni_Lund_1977.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/†Paratarrasius_hibbardi_Carboniferous_Bear_Gulch,_Montana.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/†Tyrannophontes_acanthocercus_Unt_Karbon_Bear_Gulch_Montana_USA_Ar886a.jpg
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