Ptychagnostus atavus or Leiopyge calva Zone: Marjumian, Utah
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Agnostida
- Peronopsidae
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Peronopsis sp.
Corda 1847
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Trilobita
- Ptychopariida
- Marjumiidae
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Modocia sp.
Walcott 1924
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Trilobita
- Corynexochida
- Dorypygidae
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Olenoides sp.
Meek 1877
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Kutorginata
- Kutorginida
- Nisusiidae
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Nisusia sp.
Walcott 1905
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Lingulata
- Acrotretida
- Acrotretidae
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Prototreta sp.
Bell 1941
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Utah |
| Coordinates: | 38.9° North, 113.4° West (view map) | ||
| Paleocoordinates: | 4.2° South, 92.0° West | ||
| Basis of coordinate: | based on political unit | ||
| Geographic resolution: | basin |
Time
| Period: | Cambrian | Epoch: | Miaolingian |
| 10 m.y. bin: | Cambrian 4 | ||
| *Period: | Middle Cambrian | ||
| Key time interval: | Marjumian | Trilobite zone: | Ptychagnostus atavus or Lejopyge |
| Age range of interval: | 504.50000 - 497.00000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Marjum Limestone | ||||
| Stratigraphy comments: "Ptyagnostus atavus or Leiopyge calva Zone" (Topazan, which is still Marjumian here; PJW) |
Lithology and environment
| Primary lithology: | burrows,peloidal packstone |
| Environment: | offshore ramp |
| Geology comments: "carbonate packstone, w/ f-p congl., 30-50 cm thick, bioturbation, peloidal mud. subtidal, open shelf, upper slopes of a ramp, BA2 or possibly 4 | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Taxonomic list comments:"A.J. Rowell and N.E.Caruso, 1985. The evolutionary significance of Nisusia sulcata an early articulate brachiopod. J.Paleo 59:1227-1242." | |
Metadata
| Database number: | 262 | ||
| Authorizer: | J. Sepkoski | Enterer: | M. Sommers |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 1998-11-20 10:07:18 | Last modified: | 2019-10-01 17:26:40 |
| Access level: | the public | Released: | 1998-11-20 10:07:18 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 29202. | A. J. Rowell and N. E. Caruso. 1985. The evolutionary significance of Nisusia sulcata, an early articulate brachiopod. Journal of Paleontology 59(5):1227-1242 [A. Hendy/A. Hendy] |