List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Aplanurus barbatus
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Onychoplesia sp.
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Rhynchonellata
- Orthida
- Plaesiomyidae
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Chaulistomella cf. nitens
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Rhynchonellata
- Orthida
- Plectorthidae
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Mimella aff. globosa
(Willard 1928)
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Trilobita
- Proetida
- Telephinidae
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Carrickia sp.
Tripp 1965
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| synonym of Phorocephala | ||||||||||
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Trilobita
- Proetida
- Dimeropygidae
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Dimeropyge cf. clintonensis
Shaw 1968
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= Dimeropyge speyeri
Chatterton 1994
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Chatterton 1994 | |||||||||
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Trilobita
- Odontopleurida
- Odontopleuridae
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Ceratocephala cf. triacantheis
Whittington and Evitt 1953
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| misspelled as 'tricantheis' in reference | ||||||||||
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Trilobita
- Lichida
- Lichidae
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Amphilichas sp.
Raymond 1905
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Trilobita
- Harpetida
- Harpetidae
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Dolichoharpes reticulata
Whittington 1949
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Trilobita
- Asaphida
- Remopleurididae
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Remopleurides cf. canadensis
Billings 1865
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Trilobita
- Asaphida
- Asaphidae
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Nileoides sp.
Raymond 1920
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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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Holia cf. secristi
Whittington and Evitt 1953
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= Holia glabra
Adrain 1998
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Adrain 1998 | |||||||||
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Pandaspinapyga sp.
Esker and Levin 1964
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Acanthoparypha sp.
Whittington and Evitt 1953
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Heliomeroides teres
Evitt 1951
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Ceraurinella spp.
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Sphaerexochus sp.
Beyrich 1845
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Trilobita
- Phacopida
- Encrinuridae
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Cybeloides cf. prima
(Narraway and Raymond 1906)
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| corrected as Cybele primus | ||||||||||
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Encrinuroides cf. 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
- Hollinocopida
- Tetradellidae
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Tetradella sp.
Ulrich 1890
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| see common names | ||||||||||
Geography
| Country: | Canada | State/province: | Northwest Territories | County: | District of Mackenzie |
| Coordinates: | 61.7° North, 125.9° West (view map) | ||||
| Paleocoordinates: | 6.6° North, 58.8° West | ||||
| Basis of coordinate: | stated in text | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Ordovician | ||
| *Period: | Early/Lower Ordovician - Middle Ordovician | *Epoch: | Llandeilo - Early/Lower Caradoc | *Local age/stage: | Chazyan |
| Key time interval: | Chazyan - Caradoc | Zone: | Pygodus anserinus-Amorphognathus tvaerensis |
| Age range of interval: | 470.00000 - 449.60000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Esbataottine |
| Stratigraphic resolution: | formation |
Lithology and environment
| Primary lithology: | gray argillaceous,silty "limestone" |
| Includes fossils? | Y |
| Lithology description: "[M]edium to dark grey, microcrystalline to finely crystalline, thin to medium bedded, commonly argillaceous and silty limestones that weathers banded grey and buff." | |
| Environment: | carbonate indet. |
| Geology comments: Environmental call by T. Hanson. | |
Taphonomy
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | all microfossils,some macrofossils,species names |
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 25309 | ||
| Authorizer: | S. Holland, P. Wagner | Enterer: | T. Hanson, P. Wagner |
| Modifier: | S. Holland | Research group: | marine invertebrate |
| Created: | 2002-09-07 22:28:27 | Last modified: | 2003-07-18 18:01:39 |
| Access level: | the public | Released: | 2002-09-07 22:28:27 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 7070. | R. Ludvigsen. 1975. Ordovician formations and faunas, southern Mackenzie Mountains. Canadian Journal of Earth Sciences 12:663-697 [S. Holland/T. Hanson/J. Ju] |
Secondary references:
| 23766 | J. M. Adrain. 1998. Systematics of the Acanthoparyphinae (Trilobita), with Species from the Silurian of Arctic Canada. Journal of Paleontology 72(4):698-718 [P. Wagner/P. Wagner] | |
| 24619 | B.D.E. Chatterton. 1994. Ordovician proetide trilobite Dimeropyge, with a new species from northwestern Canada. Journal of Paleontology 68(3):541-556 [P. Wagner/P. Wagner] | |
| 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] |