Loc. 347: Marjumian, Utah
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Lingulata
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Lingulata indet.
Gorjansky and Popov 1985
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unclassified
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Arthropoda indet.
Latreille 1829
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Tuzoida
- Tuzoiidae
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Tuzoia guntheri
Robison and Richards 1981
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Radiodonta
- Anomalocarididae
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Anomalocaris nathorsti
Walcott 1911
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unclassified
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Branchiocaris pretiosa
(Resser 1929)
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Agnostida
- Spinagnostidae
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Hypagnostus parvifrons
(Linnarsson 1869)
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Pseudoperonopsis sp.
Harrington 1938
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Agnostida
- Ptychagnostidae
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Ptychagnostus punctuosus
(Angelin 1851)
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Ptychagnostus occultatus
Öpik 1979
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Nektaspidida
- Naraoiidae
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Naraoia compacta
Walcott 1912
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Trilobita
- Ptychopariida
- Marjumiidae
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Modocia typicalis
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Modocia sp.
Walcott 1924
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Trilobita
- Ptychopariida
- Menomoniidae
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Bolaspidella sp.
Resser 1937
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Ottoidae
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Ottoia prolifica
Walcott 1911
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Hexactinellida
- Lyssacinosa
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Testispongia venula
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| Originally "Testiispongia venula" Assumed spelling error. | ||||||||||
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Hexactinellida
- Reticulosa
- Protospongiidae
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Diagoniella sp.
Rauff 1894
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| Originally "Diagonella sp." Assumed spelling error. | ||||||||||
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Diagoniella hindei
Walcott 1920
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| Originally "Diagonella hindei" Assumed spelling error. | ||||||||||
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Protospongia elongata
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Hexactinellida
- Reticulosa
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Valospongia gigantis
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Demospongiae
- Protomonaxonida
- Leptomitidae
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Leptomitus metta
Rigby 1983
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Demospongiae
- Protomonaxonida
- Choiidae
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Choia utahensis
Walcott 1920
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Choia carteri
Walcott 1920
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Demospongiae
- Protomonaxonida
- Hamptoniidae
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Hamptonia bowerbanki
Walcott 1920
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unclassified
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Morania fragmenta
Walcott 1919
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Utah |
| Coordinates: | 39.0° North, 113.0° West (view map) | ||
| Paleocoordinates: | 4.5° South, 91.9° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | small collection |
Time
| Period: | Cambrian | Epoch: | Miaolingian |
| 10 m.y. bin: | Cambrian 4 | ||
| Key time interval: | Marjumian | Trilobite zone: | Bolaspidella |
| Age range of interval: | 504.5 - 497 m.y. ago |
Stratigraphy
| Formation: | Marjum | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Listed as Upper to Middle Cambrian; Bolaspidella biozone (Marjumian; PJW) | |||||
Lithology and environment
| Primary lithology: | lenticular poorly lithified silty,calcareous "shale" |
| Lithology description: Moderately hard, pale yellowish-brown, platy parting, laminated, calcareous clayshale | |
| Environment: | slope |
| Geology comments: Listed as Upper slope, zone:5 | |
Taphonomy
| Modes of preservation: | body,trace,soft parts |
| Degree of concentration: | -single event |
| Size of fossils: | macrofossils,mesofossils |
| Spatial orientation: | life position |
| Articulated whole bodies: | some |
| Size sorting: | poor |
| Fragmentation: | occasional |
| Feeding/predation traces: | repair scars |
| Temporal resolution: | snapshot |
| Spatial resolution: | autochthonous |
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
| Taxonomic list comments:Ptychagnostus punctuosus zone | |
Metadata
| Database number: | 77206 | ||
| Authorizer: | P. Novack-Gottshall | Enterer: | P. Hearn |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2007-12-31 13:49:18 | Last modified: | 2010-05-23 18:35:25 |
| Access level: | the public | Released: | 2007-12-31 13:49:18 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 26137. | D. E. G. Briggs and R. A. Robison. 1984. Exceptionally preserved nontrilobite arthropods and Anomalocaris from the Middle Cambrian of Utah. University of Kansas Paleontological Contributions 111:1-23 [P. Novack-Gottshall/P. Hearn/J. Alroy] |