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One of the most remarkable soft-bodied fossil deposits (lagerstätten) on Earth is the
Pennsylvanian-aged Mazon Creek Lagerstätte near Chicago, Illinois. In the Mazon Creek area, the Francis Creek Shale consists of concretionary gray shales. The Francis Creek concretions are composed of argillaceous
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ironstone, and can be fossiliferous or nonfossiliferous. The fossiliferous concretions contain land plants and terrestrial & marine animals, including nonmineralizing organisms.
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Kallidecthes richardsoni Schram, 1969 fossil shrimp from the
Pennsylvanian of Illinois, USA (public display, FMNH PE 37598, Field Museum of Natural History, Chicago, Illinois, USA).
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Kallidecthes richardsoni fossil shrimp (Mazon Creek
Lagerstatte, Francis Creek Shale, Middle Pennsylvanian; coal mine dump pile near Essex, northern Illinois, USA).jpg
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Kallidecthes richardsoni fossil shrimp (Mazon Creek
Lagerstatte, Francis Creek Shale, Middle Pennsylvanian; coal mine dump pile near Essex, northern Illinois, USA)
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Stratigraphy: Mazon Creek
Lagerstätte, Francis Creek Shale Member, Carbondale Formation, Desmoinesian Stage (= Westphalian D), upper Middle Pennsylvanian
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This
Kallidecthes richardsoni specimen is a laterally compressed fossil shrimp in a Mazon Creek concretion.
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The following pages on the
English Knowledge use this file (pages on other projects are not listed):
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Classification: Animalia, Arthropoda, Crustacea, Malacostraca, Hoplocarida, Aeschronectida
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and was confirmed to be licensed under the terms of the cc-by-2.0.
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Locality: coal mine dump pile near Essex, northern
Illinois, USA
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https://live.staticflickr.com/5607/15342557327_ef0767e0b5_o.jpg
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Commons is a freely licensed media file repository.
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