USGS 6139-CO. Southern bank of Salt Creek, 900’ upstream from covered bridge on Enochsburg-Oldenburg Rd. New Point (Ordovician of the United States)

Where: Franklin County, Indiana (39.3° N, 85.3° W: paleocoordinates 25.2° S, 58.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Aphelognathus grandis conodont zone, Liberty biofacies Member (Dillsboro Formation), Richmondian (449.6 - 445.5 Ma)

• middle of Dillsboro, in Dicellograptus complanatus zone

• group of beds-level stratigraphic resolution

Environment/lithology: argillaceous limestone

• highly argillaceous limestone; "The Dillsboro contains about 30 percent limestone and 70 percent shale. Shale becomes more predominant southward in the lower part of the formation. Limestones are variable, but are mainly argillaceous and contain an abundant fossil fauna. Brachiopods and bryozoans are the most conspicuous, but various mollusks, arthropods, and echinoderms are common locally."

Size class: macrofossils

Preservation: replaced with silica

Reposited in the USNM

Collection methods: bulk, chemical

Primary reference: J., J.r. Pojeta and C. A. Stott. 2007. Nucularcidae: a new family of palaeotaxodont Ordovician pelecypods (Mollusca) from North America and Australia. Canadian Journal of Earth Sciences 44(10):1479-1501 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 76913: authorized by Pete Wagner, entered by Pete Wagner on 07.12.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Tergomya
 Archinacellida - Archinacellidae
Archinacella indianensis5
Gastropoda
 Bellerophontida - Bellerophontidae
Sphenosphaera mohri5
Sphenosphaera mohri5 Miller 1874 snail
 Murchisoniina - Lophospiridae
Paupospira tropidophora4, Paupospira bowdeni4
Paupospira tropidophora4 Meek 1873 snail
Paupospira bowdeni4 Safford 1869 snail
Bivalvia
 Nuculida - Nucularcidae
Nucularca cingulata
Nucularca cingulata Ulrich 1879 clam
Rhynchonellata
 Rhynchonellida - Rhynchotrematidae
"? Lepidocyclus capax" = Hiscobeccus capax2
"? Lepidocyclus capax" = Hiscobeccus capax2 Conrad 1842
 Orthida - Platystrophiidae
"Platystrophia annieana" = Vinlandostrophia annieana1
"Platystrophia annieana" = Vinlandostrophia annieana1 Foerste 1910
 Orthida - Plectorthidae
Hebertella occidentalis6
Trilobita
 Asaphida - Asaphidae
Isotelus sp.3
Isotelus sp.3 Dekay 1824 trilobite
1Alberstadt 1979; 2Howe 1979; 3Ross 1979; 4Wagner 1990; 5Wahlman 1992; 6Walker 1982