Sekwi Formation - collection 73027: Early/Lower Cambrian, Canada
collected by W. H. Fritz
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
unclassified
|
|||||||
|
informal olenellid sp.
|
1 specimen | ||||||
|
Trilobita
- Corynexochida
- Dorypygidae
|
|||||||
|
Kootenia diutina
Fritz 1972
|
9 specimens | ||||||
|
Trilobita
- Redlichiida
- Holmiidae
|
|||||||
|
Holmiella preancora
Fritz 1972
|
1 specimen | ||||||
|
Trilobita
- Redlichiida
|
|||||||
|
Bradyfallotaspis n. gen. sp.
Fritz 1972
|
1 specimen | ||||||
|
Bradyfallotaspis fusa n. gen., n. sp.
Fritz 1972
|
3 specimens | ||||||
|
Trilobita
- Redlichiida
- Nevadiidae
|
|||||||
|
Nevadella faceta
Fritz 1972
|
1 specimen | ||||||
|
Trilobita
- Ptychopariida
- Solenopleuridae
|
|||||||
|
Keeleaspis stupenda
Fritz 1972
|
2 specimens | ||||||
|
Agnostida
- Eodiscidae
|
|||||||
|
Pagetides spinulus
Fritz 1972
|
8 specimens | ||||||
| see common names | |||||||
Geography
| Country: | Canada | State/province: | Northwest Territories | County: | District of Mackenzie |
| Coordinates: | 63.5° North, 128.7° West (view map) | ||||
| Paleocoordinates: | 7.7° South, 71.0° West | ||||
| Basis of coordinate: | stated in text |
Time
| Period: | Cambrian | ||
| 10 m.y. bin: | Cambrian 1-3 | ||
| Key time interval: | Early/Lower Cambrian | Trilobite zone: | Nevadella |
| Age range of interval: | 538.80000 - 509.00000 m.y. ago |
Stratigraphy
| Formation: | Sekwi | ||
| Local section: | Mackenzie Mountain | Local bed: | 348 ft |
| Local order: | top to bottom | ||
| Stratigraphic resolution: | group of beds |
Lithology and environment
| Primary lithology: | wavy/flaser/lenticular bedding,fine,gray,blue lithified "limestone" |
| Lithology description: Thin, wavy-bedded, light blue-grey weathering limestone, finely crystaline and medium grey on fresh surfaces | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body,mold/impression |
| Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | observed (not collected) |
| Reason for describing collection: | biostratigraphic analysis |
| Museum repositories: | GSC |
| Collectors: | W. H. Fritz |
| Collection method comments: Trilobites only;collection 73027, 348 ft above base of formation | |
Metadata
| Database number: | 156143 | ||
| Authorizer: | M. Hopkins | Enterer: | S. Mahmood |
| Modifier: | M. Uhen | Research group: | marine invertebrate |
| Created: | 2014-05-09 11:50:58 | Last modified: | 2017-05-18 16:28:27 |
| Access level: | the public | Released: | 2014-05-09 11:50:58 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 51093. | W. H. Fritz. 1972. Lower Cambrian trilobites from the Sekwi Formation type section, northwestern Canada. In M. Rafuse (ed.), Geological Survey of Canada Bulletin 212 [M. Hopkins/S. Mahmood/S. Mahmood] |