Also known as HS 27
Where: Whitewood Creek in Lead County, South Dakota (44.3° N, 103.8° W: paleocoordinates 11.8° S, 82.3° W)
• small collection-level geographic resolution
When: Crepicephalus trilobite zone, lower Member (Deadwood Formation), Dresbachian (497.0 - 485.4 Ma)
• AGE: Dresbachian; refined by A. Hendy (6/2009) on the basis of biostratigraphic data (= Crepicephalus zone).
Environment/lithology: shoreface; lithology not reported
Collection methods: bulk,
Primary reference: J. H. Stitt and P. J. Perfetta. 2000. Trilobites, Biostratigraphy, and Lithostratigraphy of the Crepicephalus and Aphelaspis zones, Lower Deadwood formation (Marjuman and Steptoean Stages, Upper Cambrian), Black Hills, South Dakota. Journal of Paleontology 74(2):199-223 [M. Patzkowsky/K. Straub/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 7183: authorized by Mark Patzkowsky, entered by Kyle Straub on 10.05.2000
Creative Commons license: CC BY (attribution)
Taxonomic list
Artiopoda | |
Agnostogonus cf. incognitus Opik 1967 | |
Kormagnostus seclusus Walcott 1884 | |
Pseudagnostina douvillei Bergeron 1899
Nahannagnostus nganasanicus Rozova 1964 | |
Trilobita | |
Coosella sp. Lochman 1936 trilobite
Coosella onusta trilobite | |
Uncaspis unca, Uncaspis limbata, Coosina ariston, Crepicephalus rectus, Crepicephalus buttsimontanaensis, Crepicephalus auratus, Coosia alethes
Uncaspis unca trilobite
Uncaspis limbata trilobite
Coosina ariston Walcott 1916 trilobite
Crepicephalus rectus trilobite
Crepicephalus buttsimontanaensis trilobite
Crepicephalus auratus trilobite
Coosia alethes Walcott 1916 trilobite | |
Kingstonia walcotti trilobite
Blountia arcuosa trilobite | |
Amiaspis erratica trilobite | |
Tricrepicephalus coria trilobite |