High School Sample 34 [Deadwood Fm]: Dresbachian, South Dakota

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Agnostida - Diplagnostidae
Pseudagnostina douvillei (Bergeron 1899)
15 individuals
2 individuals
Agnostida - Agnostidae
1 individual
Hadragnostus modestus (Lochman 1944)
2 individuals
Agnostida
16 individuals
Trilobita - Ptychopariida - Marjumiidae
Syspacheilus sp. Resser 1938
1 individual
2 individuals
Trilobita - Ptychopariida - Kingstoniidae
6 individuals
Trilobita - Ptychopariida - Crepicephalidae
8 individuals
6 individuals
5 individuals
1 individual
2 individuals
1 individual
Trilobita - Ptychopariida - Lonchocephalidae
1 individual
Trilobita - Ptychopariida - Tricrepicephalidae
Tricrepicephalus coria (Walcott 1916)
3 individuals
see common names

Geography
Country:United States State/province:South Dakota County:Whitewood Creek in Lead
Coordinates: 44.3° North, 103.8° West (view map)
Paleocoordinates:27.0° North, 111.6° West (Wright 2013)
Geographic resolution:small collection
Time
Period: Cambrian Epoch: Furongian
10 m.y. bin: Cambrian 5
*Period:Late/Upper Cambrian *Epoch:Merioneth
*Local age/stage:Marjuman
Key time interval: Dresbachian Trilobite zone:  Crepicephalus
Age range of interval: 497 - 486.85 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Deadwood
Stratigraphy comments: AGE: Dresbachian; refined by A. Hendy (6/2009) on the basis of biostratigraphic data (= Crepicephalus zone).
Lithology and environment
Primary lithology: "limestone"
Secondary lithology: sandstone
Environment:shoreface
Taphonomy
Modes of preservation:body
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:bulk,field collection
Reason for describing collection:taxonomic analysis
Metadata
Also known as:HS 34
Database number:7182
Authorizer:M. Patzkowsky Enterer:K. Straub
Modifier:A. Hendy Research group:marine invertebrate
Created:2000-05-10 07:46:56 Last modified:2025-02-22 15:12:02
Access level:the public Released:2000-05-10 07:46:56
Creative Commons license:CC0
Reference information

Primary reference:
450. 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]