High School Sample 34 [Deadwood Fm]: Dresbachian, South Dakota
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Agnostida
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Agnostogonus cf. incognitus
Opik 1967
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16 individuals | ||||||
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Agnostida
- Diplagnostidae
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Nahannagnostus nganasanious
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2 individuals | ||||||
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Pseudagnostina douvillei
(Bergeron 1899)
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15 individuals | ||||||
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Agnostida
- Agnostidae
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Hadragnostus modestus
(Lochman 1944)
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2 individuals | ||||||
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Kormagnostus seclusus
(Walcott 1884)
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1 individual | ||||||
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Trilobita
- Ptychopariida
- Crepicephalidae
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Coosina ariston
(Walcott 1916)
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1 individual | ||||||
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Uncaspis limbata
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2 individuals | ||||||
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Uncaspis unca
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1 individual | ||||||
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Crepicephalus buttsimontanaensis
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5 individuals | ||||||
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Crepicephalus rectus
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6 individuals | ||||||
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Coosia alethes
(Walcott 1916)
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8 individuals | ||||||
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Trilobita
- Ptychopariida
- Tricrepicephalidae
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Tricrepicephalus coria
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3 individuals | ||||||
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Trilobita
- Ptychopariida
- Marjumiidae
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Coosella onusta
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2 individuals | ||||||
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Syspacheilus sp.
Resser 1938
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1 individual | ||||||
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Trilobita
- Ptychopariida
- Lonchocephalidae
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Amiaspis erratica
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1 individual | ||||||
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Trilobita
- Ptychopariida
- Kingstoniidae
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Kingstonia walcotti
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6 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: | 11.8° South, 82.3° West | ||||
| 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 - 485.4 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: | 2009-06-12 01:37:45 |
| Access level: | the public | Released: | 2000-05-10 07:46:56 |
| Creative Commons license: | CC BY | ||
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] |