Sunblood Mountain Calyptaulax-Ceraurinella Biofacies (A-140): Chazyan, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Trilobita
- Asaphida
- Remopleurididae
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Remopleurides pattersoni
Chatterton and Ludvigsen 1976
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23 individuals | ||||||
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Trilobita
- Asaphida
- Asaphidae
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Isotelus parvirugosus
Chatterton and Ludvigsen 1976
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28 individuals | ||||||
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Trilobita
- Lichida
- Lichidae
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Amphilichas aff. aspratilis
(Bradley 1930)
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3 individuals | ||||||
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Hemiarges turneri
Chatterton and Ludvigsen 1976
|
25 individuals | ||||||
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Trilobita
- Harpetida
- Harpetidae
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Dolichoharpes aff. reticulata
Whittington 1949
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2 individuals | ||||||
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Trilobita
- Corynexochida
- Styginidae
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Failleana calva
Chatterton and Ludvigsen 1976
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15 individuals | ||||||
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Trilobita
- Corynexochida
- Illaenidae
|
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Nanillaenus mackenziensis
Chatterton and Ludvigsen 1976
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80 individuals | ||||||
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Nanillaenus aduncus
Chatterton and Ludvigsen 1976
|
12 individuals | ||||||
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Bumastus (Bumastoides) lenzi
Chatterton and Ludvigsen 1976
|
12 individuals | ||||||
| recombined as Bumastoides lenzi | |||||||
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Trilobita
- Phacopida
- Pterygometopidae
|
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Calyptaulax callirachis
(Cooper 1953)
|
113 individuals | ||||||
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Trilobita
- Phacopida
- Encrinuridae
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Cybeloides cimelia
Chatterton and Ludvigsen 1976
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12 individuals | ||||||
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Trilobita
- Phacopida
- Cheiruridae
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Acanthoparypha evitti
Chatterton and Ludvigsen 1976
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1 individual | ||||||
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Ceraurinella nahanniensis
Chatterton and Ludvigsen 1976
|
14 individuals | ||||||
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Ceraurinella kingstoni
Chatterton and Ludvigsen 1976
|
2 individuals | ||||||
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Trilobita
- Odontopleurida
- Odontopleuridae
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Apianurus parabarbatus
Chatterton and Ludvigsen 1976
|
3 individuals | ||||||
| see common names | |||||||
Geography
| Country: | Canada | State/province: | Northwest Territories | County: | District of Mackenzie |
| Coordinates: | 61.6° North, 125.8° West (view map) | ||||
| Paleocoordinates: | 5.5° North, 59.9° West | ||||
| Basis of coordinate: | stated in text | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Ordovician | ||
| 10 m.y. bin: | Ordovician 2-4 | ||
| *Period: | Middle Ordovician | *Local age/stage: | Chazyan |
| Key time interval: | Chazyan | ||
| Age range of interval: | 470.00000 - 457.00000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Esbataottine | ||
| Local section: | Section A | Local bed: | 140 ft |
| Local order: | bottom to top | ||
| Stratigraphic resolution: | formation |
Lithology and environment
| Primary lithology: | argillaceous,silty "limestone" |
| Includes fossils? | Y |
| Environment: | deep subtidal indet. |
Taphonomy
| Modes of preservation: | replaced with silica |
| Size of fossils: | macrofossils,microfossils |
Collection methods and comments
| Collection excludes: | all microfossils |
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Also known as: | A 140 | ||
| Database number: | 25934 | ||
| Authorizer: | S. Holland | Enterer: | T. Hanson |
| Modifier: | M. Hopkins | Research group: | marine invertebrate |
| Created: | 2002-09-28 19:55:19 | Last modified: | 2011-01-12 14:50:28 |
| Access level: | the public | Released: | 2002-09-28 19:55:19 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 7069. | B. D. E. Chatterton and R. Ludvigsen. 1976. Silicified Middle Ordovician trilobites from the South Nahanni River Area, District of Mackenzie, Canada. Palaeontographica Abteilung A 154(1-3):1-106 [S. Holland/T. Hanson/T. Hanson] |