Also known as LEC 91-93
Where: Little Elk Creek County, South Dakota (44.3° N, 103.6° W: paleocoordinates 11.9° S, 82.3° W)
• small collection-level geographic resolution
When: Aphelaspis zone, lower Member (Deadwood Formation), Steptoean (497.0 - 493.5 Ma)
Environment/lithology: foreshore; siltstone and carbonate
Preservation: cast
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 7293: authorized by Mark Patzkowsky, entered by Kyle Straub on 22.05.2000
Creative Commons license: CC BY (attribution)
Taxonomic list
Trilobita | |
Cheilocephalus brevilobus Walcott 1916 trilobite | |
Blountia bristolensis Resser 1938 trilobite | |
Glaphyraspis parva Walcott 1899 trilobite | |
Aphelaspis haguei trilobite |