Dry Creek Shale and mid Deadwood Fm. (Cambrian of the United States)

Where: South Dakota (43.3° N, 103.8° W: paleocoordinates 11.9° S, 83.3° W)

• coordinate based on political unit

• basin-level geographic resolution

When: Aphelaspis zone, Dresbachian (497.0 - 485.4 Ma)

• "Dry Creek Shale and mid Deadwood Formation. Dresbachian, Aphelaspis zone"

Environment/lithology: marine; green shale

• "nearshore, BA2?, cratonic"

Size class: macrofossils

Primary reference: A. B. Shaw. 1956. A Cambrian Aphelaspis fauna from Steele Butte, near Boulder, Wyoming. Journal of Paleontology 30:48-52 [S. Peters/S. Peters/J. Ju]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 235: authorized by Jack Sepkoski, entered by Mike Sommers on 20.11.1998

Creative Commons license: CC BY (attribution)

Taxonomic list

• "A.B. Shaw, 1956. A Camb. Aphelaspis zone fauna from Steele Butte, near Boulder, Wyoming. J.Paleo 30:48-52"
Show authors, comments, and common names
Tergomya
 Kiringellida -
Hypseloconus sp.
Hypseloconus sp. Berkey 1898
Lingulata
 Lingulida - Lingulidae
Lingulidae indet.
Trilobita
 Corynexochida - Cheilocephalidae
Cheilocephalus sp.
Cheilocephalus sp. Berkey 1898 trilobite
 Ptychopariida - Lonchocephalidae
Glaphyraspis sp.
Glaphyraspis sp. Resser 1937 trilobite
 Olenida - Aphelaspidae
Aphelaspis sp.
Aphelaspis sp. Resser 1935 trilobite