Black Bear Ridge, Ludington Formation, Unit 3, Sample 99BBR1: Tuvalian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Conodonta
- Ozarkodinida
- Gondolellidae
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Metapolygnathus zoae
Orchard 1991
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| recombined as Carnepigondolella zoae | ||||||||||
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Metapolygnathus nodosus
(Hayashi 1968)
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| recombined as Hayashiella nodosa | ||||||||||
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Metapolygnathus sameli
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Osteichthyes
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Osteichthyes indet.
Huxley 1880
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| Ganoid scale sp. 1 and sp. 2 | ||||||||||
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Actinopterygii
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Actinopterygii indet.
Cope 1887
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| Type A6 | ||||||||||
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Palaeonisciformes
- Birgeriidae
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Birgeria sp.
Stensiö 1919
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Chondrichthyes
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Elasmobranchii indet.
Bonaparte 1838
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Labascicorona alata
Johns 1997
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Labascicorona mediflexura
Johns 1997
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Chondrichthyes
- Synechodontiformes
- Palaeospinacidae
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Synechodus multinodosus
Johns 1997
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Chondrichthyes
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Minuticorona sp.
Johns 1997
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| see common names | ||||||||||
Geography
| Country: | Canada | State/province: | British Columbia |
| Coordinates: | 56.1° North, 123.1° West (view map) | ||
| Paleocoordinates: | 30.2° North, 46.5° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Triassic | Epoch: | Late/Upper Triassic |
| Stage: | Carnian | 10 m.y. bin: | Triassic 3 |
| Key time interval: | Tuvalian | ||
| Age range of interval: | 233.40000 - 227.00000 m.y. ago |
Stratigraphy
| Formation: | Ludington | Local bed: | 3 | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Upper Carnian; Sample 99BBR1 from Gibson&Edwards Unit 3, Zones: Nodosus (Conodont), Welleri (Ammonoid) | |||||
Lithology and environment
| Primary lithology: | lithified siltstone |
| Secondary lithology: | lithified dolomite |
| Lithology description: The Ludington Formation at Black Bear Ridge consists of approx. 40 m of interlaminated siltstone, dolostone and minor limestone. | |
| Environment: | deep-water indet. |
| Geology comments: The Ludington Formation was deposited on the western Pangea slope, far offshore of the continental coastline. | |
Taphonomy
| Size of fossils: | macrofossils,microfossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 47324 | ||
| Authorizer: | W. Kiessling | Enterer: | S. Nurnberg |
| Modifier: | W. Kiessling | Research group: | marine invertebrate,micropaleontology |
| Created: | 2005-02-23 04:53:35 | Last modified: | 2005-06-17 04:30:42 |
| Access level: | the public | Released: | 2005-02-23 04:53:35 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 12661. | M. J. Orchard, J. P. Zonneveld, M. J. Johns, C. A. McRoberts, M. R. Sandy, E. T. Tozer, and G. G. Carrelli. 2001. Fossil succession and sequence stratigraphy of the Upper Triassic of Black Bear Ridge, northeast British Columbia, a GSSP prospect for the Carnian-Norian boundary. Albertiana 25:10-22 [W. Kiessling/S. Nurnberg/M. Uhen] |