Mount Murchison, Ellipsocephaloides Zone (Text-Fig 23): Sunwaptan, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Trilobita
- Asaphida
- Dikelocephalidae
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Stigmaspis albertensis
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Monocheilus orestes
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Monocheilus micros
(Walter 1926)
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Trilobita
- Asaphida
- Ptychaspididae
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Keithiella cf. depressa
Rasetti 1944
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Ptychaspis ? bullasa
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Ptychaspis striata
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Ptychaspis sp.
Hall 1863
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Ptychaspis informal sp.
Hall 1863
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Ptychaspis cf. miniscaensis
(Owen 1852)
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Trilobita
- Ptychopariida
- Elviniidae
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Drumaspis idahoensis
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Trilobita
- Olenida
- Idahoiidae
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Wilbernia pero
(Walcott 1890)
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Saratogia wisconsensis
(Hall 1863)
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Trilobita
- Olenida
- Parabolinoididae
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Croixana ambigua
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Croixana inflata
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Trilobita
- Ellipsocephaloididae
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Ellipsocephaloides argutus
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Ellipsocephaloides monsensis
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Ellipsocephaloides silvestris
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Ellipsocephaloides curtus
(Whitfield 1878)
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Agnostida
- Diplagnostidae
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Litagnostus parilis
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Pseudagnostus josepha
(Hall 1863)
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| see common names | |||||||
Geography
| Country: | Canada | State/province: | Alberta |
| Coordinates: | 51.5° North, 116.2° West (view map) | ||
| Paleocoordinates: | 2.8° South, 75.6° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Cambrian | Epoch: | Furongian |
| 10 m.y. bin: | Cambrian 5 | ||
| Key time interval: | Sunwaptan | ||
| Age range of interval: | 493 - 487.5 m.y. ago |
Stratigraphy
| Formation: | Bison Creek |
| Stratigraphic resolution: | group of beds |
Lithology and environment
| Primary lithology: | lithified calcareous "shale" | ||
| Secondary lithology: | intraclastic,shelly/skeletal lithified grainstone | ||
| Includes fossils? | Y | ||
| Lithology description: at type section (Mount Murchison) consists of 177m of calcareous shales and mudstones, calcarenites, intrarudites, and algal buildups | |||
| Environment: | deep subtidal indet. | Tectonic setting: | passive margin |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 64687 | ||
| Authorizer: | S. Peters | Enterer: | S. Peters | Research group: | marine invertebrate |
| Created: | 2006-09-12 09:00:25 | Last modified: | 2006-09-12 12:00:25 |
| Access level: | the public | Released: | 2006-09-12 09:00:24 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 14608. | S. R. Westrop. 1986. Trilobites of the Upper Cambrian Sunwaptan Stage, southern Canadian Rocky Mountains, Alberta. Palaeontographica Canadiana 3:1-179 [S. Peters/S. Peters/U. Merkel] |