Also known as LEC 51
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 (501.0 - 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 7199: authorized by Mark Patzkowsky, entered by Kyle Straub on 10.05.2000
Creative Commons license: CC BY (attribution)
Taxonomic list
Trilobita | |
Llanoaspis undulata trilobite
Arcuolimbus convexus Palmer 1954 trilobite | |
Dresbachia amata trilobite | |
Tricrepicephalus tripunctatus trilobite
Tricrepicephalus coria trilobite
Meteoraspis metra Walcott 1890 trilobite | |
Pemphigaspis bullata trilobite | |
Coosella onusta trilobite | |
Crepicephalus buttsimontanaensis, Crepicephalus auratus, Coosia alethes, Uncaspis limbata, Coosina ariston
Crepicephalus buttsimontanaensis trilobite
Crepicephalus auratus trilobite
Coosia alethes Walcott 1916 trilobite
Uncaspis limbata trilobite
Coosina ariston Walcott 1916 trilobite | |
Blountiella alberta trilobite | |
Artiopoda | |
Agnostogonus cf. incognitus Opik 1967 | |
Nahannagnostus nganasanicus Rozova 1964
Pseudagnostina douvillei Bergeron 1899 | |
Kormagnostus seclusus Walcott 1884 |