District of Mackenzie Ceraurinella longispina zone: Blackriveran - Rocklandian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Fistuliporida indet.
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Rhynchonellata
- Orthida
- Hesperorthidae
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Hesperorthis sp.
Schuchert and Cooper 1931
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Rhynchonellata
- Orthida
- Plectorthidae
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Doleroides sp.
Cooper 1930
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Rhynchonellata
- Protorthida
- Skenidiidae
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Skenidioides cf. anthonensis
(Sardeson 1894)
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| recombined as Skenidioides anthonense | ||||||||||
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Strophomenata
- Strophomenida
- Strophomenidae
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Tetraphalerella planobesa
(Cooper 1956)
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Holtedahlina sp.
Foerste 1924
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Strophomenata
- Strophomenida
- Furcitellidae
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Oepikina sp.
(Salmon 1942)
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| original and current combination Opikina | ||||||||||
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Strophomenata
- Strophomenida
- Sowerbyellidae
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Sowerbyella variabilis
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Strophomenata
- Orthotetida
- Triplesiidae
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Triplesia cf. subcarinatina
(Cooper 1956)
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| original and current combination Triplesia subcarinata | ||||||||||
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Stenolaemata
- Trepostomida
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? Calopora sp.
(Hall 1851)
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| replaced by Hallopora | ||||||||||
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Stenolaemata
- Cryptostomata
- Rhinidictyidae
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Stictopora spp.
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Stenolaemata
- Cryptostomata
- Escharoporidae
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? Oanduella sp.
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Stenolaemata
- Cryptostomata
- Ptilodictyidae
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Stictoporella spp.
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Ptilodictya sp.
Lonsdale 1839
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Stenolaemata
- Cryptostomata
- Arthrostylidae
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Arthrostylidae indet.
Ulrich 1882
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? Helopora sp.
Hall 1851
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Trilobita
- Corynexochida
- Illaenidae
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Bumastoides sp.
(Whittington 1954)
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Trilobita
- Odontopleurida
- Odontopleuridae
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Ceratocephala triacantheis
Whittington and Evitt 1953
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Trilobita
- Lichida
- Lichidae
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Hemiarges sp.
Gürich 1901
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Trilobita
- Harpetida
- Harpetidae
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Dolichoharpes aff. reticulata
Whittington 1949
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Trilobita
- Asaphida
- Asaphidae
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Isotelus sp.
Dekay 1824
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Anataphrus cf. borraeus
Whittington 1954
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Trilobita
- Phacopida
- Pterygometopidae
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Calyptaulax sp.
Cooper 1930
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Trilobita
- Phacopida
- Cheiruridae
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Ceraurinella arctica
Ludvigsen 1979
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| recombined as Arcticeraurinella arctica | ||||||||||
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Ceraurus hirsuitus
Ludvigsen 1979
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Ceraurinella longispina
Ludvigsen 1979
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Ceraurinella media
Ludvigsen 1979
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Sphaerexochus atacius
Ludvigsen 1979
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Trilobita
- Phacopida
- Encrinuridae
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Cybeloides cimelia
Chatterton and Ludvigsen 1976
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Encrinuroides rarus
(Walcott 1877)
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= Walencrinuroides rolfi
Moss and Westrop 2014
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Moss and Westrop 2014 | |||||||||
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Ostracoda
- Leperditellocopida
- Schmidtellidae
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Schmidtella affinis
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Ostracoda
- Leperditellocopida
- Aparchitidae
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Aparchites cf. fimbriatus
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| "Aparchites" | ||||||||||
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Ostracoda
- Hollinocopida
- Eurychilinidae
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Eurychilina prairiensis
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Ostracoda
- Hollinocopida
- Oepikellidae
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Oepikella cf. labrosa
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Ostracoda
- Leperditicopida
- Leperditiidae
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Eoleperditia sp.
Swartz 1949
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Ostracoda
- Palaeocopida
- Lomatopisthiidae
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Bolbopisthia cf. lenzi
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Ostracoda
- Podocopida
- Bairdiidae
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Krausella inaequalis
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Ostracoda
- Podocopida
- Bairdiocyprididae
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Bairdiocypris cf. granti
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| see common names | ||||||||||
Geography
| Country: | Canada | State/province: | Northwest Territories |
| Coordinates: | 62.0° North, 127.0° West (view map) | ||
| Paleocoordinates: | 7.5° North, 57.8° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | basin |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| 10 m.y. bin: | Ordovician 4-5 | ||
| *Period: | Late/Upper Ordovician | *Epoch: | Caradoc | *Local age/stage: | Blackriveran - Rocklandian |
| Key time interval: | Blackriveran - Rocklandian | Trilobite zone: | Ceraurinella longispina |
| Age range of interval: | 457.00000 - 449.80000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Esbataottine & Sunblood | ||||
| Stratigraphy comments: Collections derived from two formations |
Lithology and environment
| Primary lithology: | gray lithified "limestone" | ||
| Environment: | carbonate indet. | Tectonic setting: | passive margin |
| Geology comments: Environmental and Tectonic Setting calls by S.M. Holland | |||
Taphonomy
| Modes of preservation: | body,replaced with silica |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | bulk,chemical,field collection |
| Rock censused: | 0 |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 24634 | ||
| Authorizer: | S. Holland, P. Wagner | Enterer: | S. Holland, P. Wagner |
| Modifier: | M. Hopkins | Research group: | marine invertebrate |
| Created: | 2002-08-12 14:40:21 | Last modified: | 2011-03-16 15:29:40 |
| Access level: | the public | Released: | 2002-08-12 14:40:21 |
| 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:
| 53464 | D. K. Moss and S. R. Westrop. 2014. Systematics of some Late Ordovician encrinurine trilobites from Laurentian North America. Journal of Paleontology 88(6):1095-1119 [P. Wagner/P. Wagner] |