Walcott Locality 78. Quarry near St. Croix Friver, suburbs of Osceola (Cambrian of the United States)

Where: Polk County, Wisconsin (45.3° N, 92.7° W: paleocoordinates 19.2° S, 79.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Potsdam Sandstone Formation, Trempealeauan (501.0 - 485.4 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; sandstone

Size class: macrofossils

Reposited in the USNM

Primary reference: E. L. Yochelson. 1987. Rediscription of Spirodentalium Walcott (Gastropoda: Late Cambrian) from Wisconsin. Journal of Paleontology 61(1):66-69 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 93598: authorized by Pete Wagner, entered by Pete Wagner on 25.01.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Helcionelloida
 Helcionellida - Coreospiridae
Owenella antiquata Whitfield 1878
Gastropoda
 Eogastropoda - Sinuopeidae
"Holopea sweeti n. sp." = Sinuopea sweeti2
"Holopea sweeti n. sp." = Sinuopea sweeti2 Whitfield 1882 snail
just given as "Osceola Mills"
Tergomya
 Tryblidiida -
"Tryblidium barabuensis" = Ellsworthoconus barabuensis1
"Tryblidium barabuensis" = Ellsworthoconus barabuensis1 Whitfield 1878
Spirodentalium osceola
  - Coleolidae
Spirodentalium osceola n. sp. Walcott 1890