B1-6, Broom Point North: Trempealeauan, Canada
collected by R. A. Fortey, D. Skevington
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Agnostida
- Agnostidae
|
||||||||||
|
Gymnagnostus ? mexicanus
Robison and Pantoja-Alor 1968
|
||||||||||
|
Agnostida
- Metagnostidae
|
||||||||||
|
Segmentagnostus sp.
Pek 1977
|
||||||||||
|
Trilobita
- Olenida
- Olenidae
|
||||||||||
|
Leptoplastides cf. marianus
(Hoek 1912)
|
||||||||||
|
Leiobienvillia terranovica
(Rasetti 1954)
|
||||||||||
|
Parabolinella triarthroides
Harrington 1938
|
||||||||||
| sensu Shaw 1951 | ||||||||||
|
Trilobita
- Corynexochida
- Missisquoiidae
|
||||||||||
|
Missisquoia typicalis
Shaw 1951
|
||||||||||
|
Missisquoia cf. nasuta
Winston and Nicholls 1967
|
||||||||||
|
Lunacrania cf. trisecta
Kobayashi 1955
|
||||||||||
|
Trilobita
- Asaphida
- Nileidae
|
||||||||||
|
Symphysurina cf. spicata
Ulrich in Walcott 1925
|
||||||||||
| see common names | ||||||||||
Geography
| Country: | Canada | State/province: | Newfoundland and Labrador |
| Coordinates: | 49.8° North, 57.9° West (view map) | ||
| Paleocoordinates: | 6.8° North, 86.5° West (Wright 2013) | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | outcrop |
Time
| Period: | Cambrian | Epoch: | Furongian |
| 10 m.y. bin: | Cambrian 5 | ||
| Key time interval: | Trempealeauan | Trilobite zone: | Missisquoia |
| Age range of interval: | 489.2 - 485.4 m.y. ago |
Stratigraphy
| Geological group: | Cow Head | Formation: | Green Point | Member: | Broom Point |
| Stratigraphy comments: Local section is Broom Point North but meterage is not given in Fortey et al 1982, althougth "-6" refers to approximate meterage below B1 boulder bed. Collection placed at 145.9 m of section in James and Stevens 1986. | |||||
Lithology and environment
| Primary lithology: | gray,green argillaceous "limestone" |
| Secondary lithology: | nodular "limestone" |
| Lithology description: James and Stevens 1986, p. 124: "Ribbon to parted limestone--layers 2-4 cm thick, evenly bedded to nodular, separated by green-gray argillaceous limestone." | |
| Environment: | slope |
| Geology comments: Environmental interpretation based on James and Stevens 1986. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | bulk,field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Museum repositories: | ROM |
| Collectors: | R. A. Fortey, D. Skevington |
| Taxonomic list comments:Radiograptus rosieranus flexibilis and numerous conodonts range through this interval. | |
Metadata
| Database number: | 105869 | ||
| Authorizer: | M. Hopkins | Enterer: | M. Hopkins |
| Modifier: | J. Alroy | Research group: | marine invertebrate |
| Created: | 2011-02-26 08:05:14 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2011-02-26 08:05:14 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 35330. | R. A. Fortey, E. Landing, and D. Skevington. 1982. Cambrian-Ordovician boundary sections in the Cow Head Group, western Newfoundland. In M. G. Bassett, W. T. Dean (eds.), The Cambrian-Ordovician boundary: sections, fossil distributions, and correlations. National Museum of Wales, Geological Series No. 3, Cardiff 95-129 [M. Hopkins/M. Hopkins/M. Hopkins] |
Secondary references:
| 35329 | N. P. James and R. K. Stevens. 1986. Stratigraphy and correlation of the Cambro-Ordovician Cow Head Group, western Newfoundland. Geological Survey of Canada Bulletin 366:1-143 [M. Hopkins/M. Hopkins] |