EN 212, Deadwood Form., Black Hills, South Dakota - Stitt and Straatmann 1997 (Cambrian of the United States)

Where: Lawrence County, South Dakota (44.3° N, 103.8° W: paleocoordinates 11.8° S, 82.3° W)

• local area-level geographic resolution

When: Ellipsocephaloides zone, Deadwood Formation, Franconian (497.0 - 485.4 Ma)

• Collection numbers represent exact footage above the base of the section.

• group of beds-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, yellow shale and lithified sandstone

• The Black Hills is a domal basement uplift formed during the Laramide Orogeny.
• interbedded thick fissile shale and yellow laminated sandstone.

Collection methods: Collected by Christina Lochman-Balk and her students. Only trilobites are included in the collection.

Primary reference: J. H. Stitt and W. M. Straatmann. 1997. Trilobites from the upper part of the Deadwood Formation (Upper Franconian and Trempealeauan stages, Upper Cambrain), Black Hills, South Dakota. Journal of Paleontology 71(1):86-102 [M. Patzkowsky/P. Borkow/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 9734: authorized by Mark Patzkowsky, entered by Phil Borkow on 18.01.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

• Abundances are lsited as cranidia-pygidia-librigenae-hypostomes (C-P-L-H), for polymeroid trilobites, cephala-pygidia (C-P) for agnostid trilobites, and number of valves for brachiopods.
Show authors, comments, and common names
Trilobita
 Olenida - Idahoiidae
Idahoia serapio
Idahoia serapio Walcott 1924 trilobite
(1-0-0-0)
 Asaphida - Ptychaspididae
Ptychaspis miniscaensis
Ptychaspis miniscaensis Owen 1852 trilobite
(3-3-1-0)
 Asaphida - Dikelocephalidae
Prosaukia sp.
Prosaukia sp. Ulrich and Resser 1933 trilobite
(1-0-0-0)
 Ptychopariida - Elviniidae
Dartonaspis wichitaensis
Dartonaspis wichitaensis trilobite
(5-1-1-0)
 Ptychopariida - Kingstoniidae
Pugionicauda paradoxa
Pugionicauda paradoxa trilobite
(6-32-0-0)
  - Ellipsocephaloididae
Ellipsocephaloides monsensis
Ellipsocephaloides monsensis trilobite
(21-0-0-0)
Artiopoda
 Agnostida - Diplagnostidae
"Litagnostus paralis" = Pseudagnostus
"Litagnostus paralis" = Pseudagnostus
(36-33)