Black Hills, lower Deadwood Fm. (Cambrian of the United States)

Where: South Dakota (44.4° N, 103.7° W: paleocoordinates 12.2° S, 88.9° W)

• coordinate based on nearby landmark

When: Crepicephalus zone, lower Member (Deadwood Formation), Cambrian (538.8 - 485.4 Ma)

• "Dresbachian, Crepicephalus zone"

Environment/lithology: marine; green shale

• "green sh, and thin ls, sltst and fine ss (tempestites). nearshore BA2 craton"

Size class: macrofossils

Primary reference: J. W. Kulik. 1965. Stratigraphy of the Deadwood Formation Black Hills, South Dakota and Wyoming. MS Thesis South Dakota School of Mines and Technology. Rapid City. Crepicephalus horizon in the Deadwood Formation of South Dakota. Proceedings of the Geological Society of America 1993 1-99 [M. Uhen/J. Ju]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 231: authorized by Jack Sepkoski, entered by Mike Sommers on 20.11.1998

Creative Commons license: CC BY (attribution)

Taxonomic list

• "J.W. Kulik 1965. Strat of the Deadwood Fm. Black Hills, So. Dak. and Wyoming. MS Thesis S.Dak School of Mines and Tech. Rapid City. M.A. Meyerhoff and C. Lochman, 1934. Crepicephalus horizon in the Deadwood Fm. of S. Dak. (abs) GSA Proc. 1933 p.99"
Show authors, comments, and common names
Hyolitha
 Hyolithida - Hyolithidae
Hyolithes sp.
Hyolithes sp. d'Eichwald 1840
Lingulata
 Acrotretida - Acrotretidae
Acrotreta sp.
Acrotreta sp. Kutorga 1848
 Lingulida - Obolidae
Dicellomus sp., Lingulepis sp.
Lingulepis sp. Hall 1863
Trilobita
 Olenida - Asaphiscidae
Blountiella sp.
Blountiella sp. Resser 1938 trilobite
 Ptychopariida - Crepicephalidae
Crepicephalus sp., Coosina sp., Coosia sp., Uncaspis sp.
Crepicephalus sp. Owen 1852 trilobite
Coosina sp. Rasetti 1956 trilobite
Coosia sp. Walcott 1911 trilobite
Uncaspis sp. Kobayashi 1935 trilobite
 Ptychopariida - Kingstoniidae
Kingstonia sp., Blountia sp.
Kingstonia sp. Walcott 1924 trilobite
Blountia sp. Walcott 1916 trilobite
 Ptychopariida - Tricrepicephalidae
Meteoraspis sp., Tricrepicephalus sp.
Meteoraspis sp. Resser 1935 trilobite
Tricrepicephalus sp. Kobayashi 1935 trilobite
 Ptychopariida - Menomoniidae
Dresbachia sp.
Dresbachia sp. Walcott 1916 trilobite
 Ptychopariida - Marjumiidae
Coosella sp.
Coosella sp. Lochman 1936 trilobite
 Ptychopariida - Catillicephalidae
Pemphigaspis sp.
Pemphigaspis sp. Hall 1863 trilobite
  - Llanoaspididae
Arcuolimbus sp.
Arcuolimbus sp. Palmer 1954 trilobite
Artiopoda
 Agnostida - Diplagnostidae
Pseudagnostus sp.
Pseudagnostus sp. Jaekel 1909
 Agnostida - Agnostidae
Kormagnostus sp., Agnostus sp.
Kormagnostus sp. Resser 1938
Agnostus sp. Brongniart 1822