Where: Franklin County, Kentucky (38.1° N, 84.9° W: paleocoordinates 27.1° S, 63.2° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Logana Limestone Member (Lexington Limestone Formation), Chatfieldian (453.8 - 451.0 Ma)
• "Upper part of the Logana Member, Lexington Limestone [...] Just below 4-ft-thick dalmanellid coquina."; Section name: Frankfort East B; Section no. 87; "Just below 4-ft-thick dalmanellid coquina"
• group of beds-level stratigraphic resolution
Environment/lithology: open shallow subtidal; tabular, argillaceous limestone and shale
•sequence stratigraphy is according to McLaughlin et al. (2004, Palaeogeogr. Palaeoclimat. Palaeoecol., 210)
Size class: macrofossils
Preservation: replaced with silica
Reposited in the USNM
Collection methods: bulk, acetic,
• " [...] specimens were obtained from bulk rock collections (36,000 pounds (lbs) of limestone) made by USGS field parties in the 1960's and 1970's." This statement not only applies to the Frankfort East B locality. For further details on collection methods see p. P22 in the primary reference
Primary reference: R. C. Frey. 1995. Middle and Upper Ordovician nautiloid cephalopods of the Cincinnati Arch region of Kentucky, Indiana, and Ohio. U.S. Geological Survey Professional Paper 1066P:1-126 [S. Holland/S. Holland]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 87820: authorized by Björn Kröger, entered by Torsten Liebrecht on 25.03.2009, edited by Pete Wagner
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
| |
Gastropoda | |
| |
Tergomya | |
"Cyrtolites (Cyrtolites) retrorsus" = Cyrtolites retrorsus2
"Cyrtolites (Cyrtolites) retrorsus" = Cyrtolites retrorsus2 Ulrich and Scofield 1897 | |
Rhynchonellata | |
Dalmanella sulcata3 Cooper 1956 | |
Rostricellula minuta1 Cooper 1956 |