Where: Pike County, Illinois (39.6° N, 91.1° W: paleocoordinates 21.6° S, 36.9° W)
• coordinate based on political unit
• outcrop-level geographic resolution
When: Glen Park Formation, Tournaisian (358.9 - 346.7 Ma)
• This formation was previously known as the Horton Creek member of the Hannibal Formation. Due to the existence of a paraconformity between the Devonian-Mississippian contact, the exact stratigraphic position of these beds has been corrected several times since their first description in the early 1900's. Carter contains a complete description of the history of work done on these sections.
• group of beds-level stratigraphic resolution
Environment/lithology: shallow subtidal; limestone
• carter states that the fossils are found in only one lithology at each collecting locality, often only in one bed. elsewhere in the paper he states by far the most divese fauna occurs in the thin biomicrite at brown branch (sl393) and that adult sized brachiopods were found in the arenaceous limestone at this locality. and in the stratigraphic localities section, he describes this locality as a basal micritic limestone bed with geodes and conglomeratic clasts at east end of bluff highly fossiliferous. however, in general, the formation is described as containing fossils (brachiopods in particular) in biomicrite, oosparite, silty dolomite or dolomitic limestone, and calcareous sandstone or arenaceous limestone.
Collection methods: This collection from the Carnegie Museum of Natural History and the Illinois State Geological Survey.
Primary reference: J. L. Carter. 1988. Early Mississippian Brachiopods from the Glen Park Formation of Illinois and Missouri. Bulletin of Carnegie Museum of Natural History (27)1-82 [A. Miller/D. Carlson]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 5795: authorized by Arnold Miller, entered by Donna Carlson on 02.12.1999
Creative Commons license: CC BY (attribution)
Taxonomic list
• Although molluscs are abundant at the type section of the formation and other macro invertebrates are very rare, only the brachiopod data are reported in this list.
Show authors, comments, and common names
| Lingulata |
| Lingulida - Discinidae |
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| Strophomenata |
| Productida - Araksalosiidae |
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| Productida - Productidae |
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| Productida - Productellidae |
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| Productida - Sentosiidae |
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| Productida - Monticuliferidae |
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| Orthotetida - Schuchertellidae |
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| Strophomenida - Rugosochonetidae |
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| Strophomenida - Rafinesquinidae |
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| Rhynchonellata |
| Spiriferida - Mucrospiriferidae |
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| Spiriferida - Elythidae |
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| Spiriferida - Spiriferidae |
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| Spiriferida - Brachythyrididae |
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| Spiriferida - Eudoxinidae |
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| Spiriferida - Martiniidae |
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| Athyridida - Meristidae |
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| Athyridida - Athyrididae |
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| Spiriferinida - Dimegelasmidae |
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| Spiriferinida - Syringothyrididae |
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| Rhynchonellida - Rhynchotetradidae |
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| Rhynchonellida - Rhynchoporidae |
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| Rhynchonellida - Stenoscismatidae |
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| Terebratulida - Cranaenidae |
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| Terebratulida - Cryptonellidae |
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| Terebratulida - Beecheriidae |
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| Orthida - Rhipidomellidae |
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