CAT-1, Cape Breton Island [West Centre Cove Formation]: Tommotian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Orthothecimorpha
- Circothecida
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Ladatheca cylindrica
(Grabau 1900)
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5 individuals | |||||||||
| only body fossil found | ||||||||||
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unclassified
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Hyolithia indet.
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| see common names | ||||||||||
Geography
| Country: | Canada | State/province: | Nova Scotia |
| Coordinates: | 46.0° North, 60.0° West (view map) | ||
| Paleocoordinates: | 79.6° South, 57.0° West | ||
| Geographic resolution: | outcrop |
Time
| Period: | Cambrian | Epoch: | Terreneuvian |
| Stage: | Stage 2 | 10 m.y. bin: | Cambrian 2 |
| *Period: | Early/Lower Cambrian | *Epoch: | Early/Lower Caerfai - Middle Caerfai |
| *International age/stage: | Nemakit-Daldynian - Tommotian | ||
| Key time interval: | Tommotian | Zone: | Sunnaginia imbricata |
| Age range of interval: | 525.5 - 521 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | West Centre Cove | ||||
| Regional section: | Avalonian shale basins | Regional bed: | lithofacies #1 | ||
| Regional order: | bottom to top | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: STRATIGRAPHY: Located above the Random Formation and bellow the Cuslett Formation. Represents lithofacies #1 of the Avalonian shale basins. AGE: Refined to Tommotian, based on range of Sunnagina imbricata zone (A. Hendy 6/2009). | |||||
Lithology and environment
| Primary lithology: | bioturbation,gray,green lithified lime mudstone |
| Secondary lithology: | sandstone |
| Includes fossils? | Y |
| Lithology description: purple, green, and grey, weakly bioturbated siliclastic mudstones with mm-scale sand laminae, with or without calcareous nodules | |
| Environment: | marine indet. |
| Geology comments: Deposition controled by epeirogenic extension. | |
Taphonomy
| Modes of preservation: | replaced with pyrite |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | bulk,mechanical,field collection |
| Collection size: | 5 specimens |
| Reason for describing collection: | biostratigraphic analysis |
| Collection method comments: Specimens obtained through crack-out. | |
Metadata
| Database number: | 6895 | ||
| Authorizer: | M. Patzkowsky | Enterer: | P. Borkow |
| Modifier: | M. Uhen | Research group: | marine invertebrate |
| Created: | 2000-04-07 17:21:57 | Last modified: | 2018-11-18 14:26:18 |
| Access level: | the public | Released: | 2000-04-07 17:21:57 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 430. | E. D. Landing. 1991. Upper Precambrian through Lower Cambrian of Cape Breton Island: faunas, paleoenvironments, and stratigraphic revision. Journal of Paleontology 65(4):570-595 [M. Patzkowsky/P. Borkow/J. Alroy] |