459-z at Chapman's Ranch in Arbuckle Mts on Highway 77 (Ordovician of the United States)

Also known as Between Davis and Springer

Where: Carter County, Oklahoma (34.4° N, 97.2° W: paleocoordinates 20.3° S, 86.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Chapman Ranch Formation, Demingian (485.4 - 478.6 Ma)

• formation-level stratigraphic resolution

Environment/lithology: limestone

Size class: macrofossils

Reposited in the USNM

Primary reference: E. O. Ulrich, A. F. Foerste, and J. Bridge. 1931. Systematic Paleontology. Geology of the Eminence and Cardareva Quadrangles 186-225 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 154359: authorized by Pete Wagner, entered by Pete Wagner on 17.02.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

 Eogastropoda - Sinuopeidae
"Sinuopea umbilicata" = Sinuopea vera, Sinuopea basiplanata
"Sinuopea umbilicata" = Sinuopea vera Ulrich et al. 1931 snail
Sinuopea basiplanata Ulrich et al. 1931 snail