Where: Kentucky (37.7° N, 85.9° W: paleocoordinates 19.6° S, 33.0° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Muldraugh Member (Borden Formation), Chadian to Chadian (346.7 - 340.0 Ma)
• JA: "late Osagean interval 4 of Ausich et al. (1994)... correlative with the Edwardsville Formation... the Fort Payne Formation... and the Keokuk Limestone"; the late Osagean is Chadian and Arundian according to Heckel and Clayton 2006
• member-level stratigraphic resolution
Environment/lithology: deep subtidal ramp; lithified, gypsiferous, shelly/skeletal, cherty/siliceous packstone and lithified, gypsiferous shale
• In general, the Muldraugh Member of the Borden Formation has lenticular bedding, with the base of beds irregular and erosional with pinch and swell mainly on the upper surface of beds. Few beds or bedding surfaces are traceable throughout the entire quarry. Bedding thickness varies from a few centimeters to more than 75 centimeters. Lithologically, the most abundant carbonate rock type is an argillaceous, coarse-grained crinoidal packstone, but finer grained packstones, grainstones, calcareous siltstones, and shales are also present. Sedimentary structures include megaripples, cross-bedding, and graded bedding. Silicification is very common; and large (up to 20 cm) gypsum nodules, some gypsum layers, and gypsum fracture fillings are also present. Some beds are bioturbated, with identified trace fossils being Chondrites and Zoophycos.
Size class: macrofossils
Preservation: original calcite
Reposited in the USNM
Primary reference: W. I. Ausich, A. Goldstein, and R. Yates. 2000. Crinoids from the Muldraugh Member of the Borden Formation in north-central Kentucky (Echinodermata, Lower Mississippian). Journal of Paleontology 74(6):1072-1082 [S. Holland/S. Holland/S. Holland]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 37879: authorized by Steven Holland, entered by Steven Holland on 26.03.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| unclassified |
| - |
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| Crinoidea |
| Monobathrida - Dichocrinidae |
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| Monobathrida - Batocrinidae |
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| Monobathrida - Actinocrinitidae |
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| Monobathrida - Coelocrinidae |
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| Monobathrida - Platycrinitidae |
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| Diplobathrida - Rhodocrinitidae |
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| Disparida - Catillocrinidae |
|
| Calceocrinida - Calceocrinidae |
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| Disparida - Synbathocrinidae |
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| Cladida - |
|
| Cyathocrinida - Cyathocrinitidae |
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| Poteriocrinina - Poteriocrinitidae |
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| Poteriocrinina - Decadocrinidae |
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| Dendrocrinida - Scytalocrinidae |
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| Dendrocrinida - Staphylocrinidae |
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| Dendrocrinida - Pachylocrinidae |
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| Dendrocrinida - Adinocrinidae |
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| Dendrocrinida - Amabilicrinidae |
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| Dendrocrinida - Zeacrinitidae |
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| Dendrocrinida - Blothrocrinidae |
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| Dendrocrinida - Aphelecrinidae |
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| Cladida - Botryocrinidae |
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| Sagenocrinida - Mespilocrinidae |
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| Sagenocrinida - Sagenocrinitidae |
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| Sagenocrinida - Dactylocrinidae |
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| Taxocrinida - Synerocrinidae |
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| Taxocrinida - Taxocrinidae |
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| Cladida - |
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| Blastoidea |
| Troosticrinida - Troosticrinidae |
|