255-t (= U. 15). 2.33 miles east of Jasper. Sequatchie Valley (Ordovician of the United States)

Where: Marion County, Tennessee (35.1° N, 85.6° W: paleocoordinates 28.8° S, 81.7° W)

• outcrop-level geographic resolution

When: Chepultepec Formation, Demingian (485.4 - 478.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: cherty/siliceous dolomite

• heavy rotten and correnous chert.

Size class: macrofossils

Preservation: replaced with silica

Collected by Ulrich in 1910 - 1920; reposited in the USNM

Primary reference: P. J. Wagner. 2023. Paleozoic Gastropod, Rostroconch, Helcionelloid and Tergomyan Database (2006 - 2023). [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 154344: authorized by Pete Wagner, entered by Pete Wagner on 16.02.2014, edited by Björn Kröger

Creative Commons license: CC BY (attribution)

Taxonomic list

• Compiled by Pete Wagner from USGS collections housed at the Smithsonian, during the summer of 1991.
Show authors, comments, and common names
Cephalopoda
 Ellesmerocerida - Ellesmeroceratidae
Clarkoceras jasperense, Clarkoceras curvatum, Ectenoceras arcuosutum, Conocerina obliqua, Caseoceras conicum, Caseoceras sequatchiense, Levisoceras raaschi, Levisoceras transitum
Clarkoceras jasperense Ulrich et al. 1943
Clarkoceras curvatum Ulrich et al. 1943
Ectenoceras arcuosutum Ulrich et al. 1943
Conocerina obliqua Ulrich et al. 1943
Caseoceras conicum Ulrich et al. 1943
Caseoceras sequatchiense Ulrich et al. 1943
Levisoceras raaschi Ulrich et al. 1943
Levisoceras transitum Ulrich et al. 1943
Gastropoda
 Euomphalina - Macluritidae
Macluritella uniangulata
Macluritella uniangulata Hall 1847 snail
 Euomphalina - Euomphalidae
Euomphalopsis involuta
Euomphalopsis involuta Ulrich et al. 1931 snail
 Euomphalina - Raphistomatidae
Ceratopea grandis
Ceratopea grandis Butts 1926 snail
 Euomphalina - Ophiletidae
Ophileta supraplana
Ophileta supraplana Ulrich et al. 1931 snail
 Eogastropoda - Sinuopeidae
Gasconadia putilla, Sinuopea basiplanata, Chepultapecia leiosomella, Schizopea grandis
Gasconadia putilla Sardeson 1896 snail
Sinuopea basiplanata Ulrich et al. 1931 snail
Chepultapecia leiosomella Sardeson 1896 snail
Schizopea grandis Ulrich et al. 1931 snail