Eurychilina-Stictopora biofacies, no formation name, Blackriverian and Chazyan,: Chazyan, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita
- Asaphida
- Asaphidae
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Isotelus sp.
Dekay 1824
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Ostracoda
- Hollinocopida
- Oepikellidae
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Oepikella sp.
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Ostracoda
- Hollinocopida
- Eurychilinidae
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Eurychilina sp.
Ulrich 1889
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Ostracoda
- Palaeocopida
- Leperditellidae
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Leperditella sp.
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Ostracoda
- Platycopida
- Kloedenellidae
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Eukloedenella sp.
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originally entered as "Eokloedenella sp." | ||||||||||
Strophomenata
- Strophomenida
- Strophomenidae
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Strophomena sp.
Rafinesque and De Blainville 1824
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Rhynchonellata
- Orthida
- Plectorthidae
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Mimella sp.
Cooper 1930
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Stenolaemata
- Cryptostomata
- Ptilodictyidae
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Stictoporella sp.
Ulrich 1882
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Ptilodictya sp.
Lonsdale 1839
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Stenolaemata
- Cryptostomata
- Rhinidictyidae
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Stictopora sp.
Hall 1847
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Pachydictya sp.
Ulrich 1882
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Stenolaemata
- Cryptostomata
- Arthrostylidae
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Ulrichostylus sp.
Bassler 1952
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Stenolaemata
- Phylloporinidae
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Phylloporinidae indet.
Ulrich 1890
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Stenolaemata
- Trepostomata
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Trepostomata indet.
Ulrich 1882
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Stenolaemata
- Trepostomata
- Heterotrypidae
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Dekayia sp.
Milne-Edwards and Haime 1851
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see common names |
Geography
Country: | Canada | State/province: | Northwest Territories |
Coordinates: | 62.0° North, 126.0° West (view map) | ||
Paleocoordinates: | 5.7° North, 59.6° West | ||
Basis of coordinate: | based on political unit |
Time
Period: | Ordovician | Epoch: | Middle Ordovician |
Stage: | Darriwilian | ||
*Period: | Middle Ordovician | *Local age/stage: | Chazyan - Blackriverian |
Key time interval: | Chazyan | ||
Age range of interval: | 468.10000 - 460.90000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Stratigraphy comments: "M. Ord." |
Lithology and environment
Primary lithology: | "carbonate" | ||
Environment: | shallow subtidal indet. | Tectonic setting: | passive margin |
Geology comments: "carbonate? subtidal, mid-shelf (BA3). ocean facing stable shelf" |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Reason for describing collection: | general faunal/floral analysis |
Taxonomic list comments:"Hayes, 1980. Can. Jour. Earth Sci. 17:1377-1388. Ludvigsen 1979. Geol. Surv. Can. Bull. 312. Ross, 1982. NAPC III" |
Metadata
Database number: | 313 | ||
Authorizer: | J. Sepkoski | Enterer: | M. Sommers |
Modifier: | M. Clapham | Research group: | marine invertebrate |
Created: | 1998-11-20 10:07:18 | Last modified: | 2022-11-12 11:18:21 |
Access level: | the public | Released: | 1998-11-20 10:07:18 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
6928. | R. Ludvigsen. 1979. A trilobite zonation of Middle Ordovician rocks, southwestern District of Mackenzie. Geological Survey of Canada Bulletin 312:1-98 [S. Holland/S. Holland/J. Ju] |
Secondary references:
60895 | B. J. R. Hayes. 1980. A cluster analysis interpretation of Middle Ordovician biofacies southern MacKenzie Mountains. Canadian Journal of Earth Sciences 17:1377-1388 [M. Uhen/J. Ju/M. Uhen] |