Also known as LEC 57
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: 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; limestone and sandstone
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 7201: authorized by Mark Patzkowsky, entered by Kyle Straub on 11.05.2000
Creative Commons license: CC BY (attribution)
Taxonomic list
Trilobita | |
Llanoaspis undulata trilobite
Arcuolimbus convexus Palmer 1954 trilobite | |
Kingstonia bealesoides trilobite
Kingstonia walcotti trilobite | |
Coosina ariston Walcott 1916 trilobite
Crepicephalus buttsimotanaensis trilobite
Coosia alethes Walcott 1916 trilobite | |
Dresbachia amata trilobite | |
Tricrepicephalus metra trilobite
Tricrepicephalus coria trilobite | |
Artiopoda | |
Kormagnostus seclusus Walcott 1884
Hadragnostus modestus Lochman 1944 | |
Pseudagnostina douvillei Bergeron 1899 |