A0094. Becscie River road: Hirnantian, Canada
collected by P. Copper
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Strophomenata
- Strophomenida
- Sowerbyellidae
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Sowerbyella (Eochonetes) sp.
Reed 1917
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Eochonetes glabra
(Shaler 1865)
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210 specimens | ||||||
Strophomenata
- Strophomenida
- Strophomenidae
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Leptaena quadrilatera
(Logan 1863)
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120 specimens | ||||||
original and current combination Strophomena rhomboidalis | |||||||
Rhynchonellata
- Orthida
- Plaesiomyidae
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Plaesiomys anticostiensis
(Shaler 1865)
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Jin and Zhan 2008 | ||||||
recombined as Dinorthis anticostiensis | |||||||
Rhynchonellata
- Orthida
- Hesperorthidae
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Barbarorthis laurentina
(Billings 1857)
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Jin and Zhan 2008 | ||||||
recombined as Hesperorthis laurentina | |||||||
Rhynchonellata
- Orthida
- Plectorthidae
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Hebertella maria
(Billings 1862)
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Jin and Zhan 2008 | ||||||
Rhynchonellata
- Orthida
- Dalmanellidae
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Onniella tricapitata
Jin and Zhan 2008
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Jin and Zhan 2008 | ||||||
Rhynchonellata
- Atrypida
- Atrypinidae
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Eospirigerina sp.
Schuchert and Cooper 1930
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Jin and Zhan 2008 | ||||||
Rhynchonellata
- Athyridida
- Meristellidae
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Hindella sp.
Davidson 1882
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Jin and Zhan 2008 | ||||||
see common names |
Geography
Country: | Canada | State/province: | Quebec | County: | Anticosti Island |
Coordinates: | 49.8° North, 64.0° West (view map) | ||||
Paleocoordinates: | 21.9° South, 37.5° West | ||||
Basis of coordinate: | stated in text | ||||
Geographic resolution: | small collection |
Time
Period: | Ordovician | Epoch: | Late/Upper Ordovician |
Stage: | Hirnantian | 10 m.y. bin: | Ordovician 5 |
Key time interval: | Hirnantian | Other zone: | Spinachitina taugourdeaui |
Age range of interval: | 445.20000 - 443.40000 m.y. ago |
Stratigraphy
Formation: | Ellis Bay | Member: | Lousy Cove | ||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: Collection A94 of Dewing 1999. Same collection names are used by Jin 1989, Jin and Zhan 2008, and Li and Copper 2006. |
Lithology and environment
Primary lithology: | wavy/flaser/lenticular bedding lithified calcareous lime mudstone | ||
Secondary lithology: | hummocky CS,very fine lithified calcareous lime mudstone | ||
Lithology description: Member description taken from 2007 Long. Tempestite frequency curves: a key to Late Ordovician and Early Silurian subsidence, sea-level change, and orbital forcing in the Anticosti foreland basin, Quebec, Canada. Can. J. Earth Sci. Vol. 44, 413-431. "At its type section along the northeast coast of Anticosti Island the Lousy Cove Member consists of 15 to 16 m of interbedded, laminated, calcareous mudstone and limestone, with minor sandstones. The upper few metres of the member are dominated by flat to wavy laminated micrites, interbedded with calcareous mudstones. These micrites typically have sharp bases, with a thin layer of disarticulated fossils, and a pitted top. At the west end of the island, the member consists of about 18 m of predominantly nodular to subnodular micrite, with about 10% to 15% interbedded calcareous mudstone. The lower 5 m of the member are recessive and may be dominated by mudstones. The upper 3 m of the member are dominated by hummocky and swaley cross-stratified, very fine sand-grade calcarenites." | |||
Environment: | carbonate indet. | Tectonic setting: | foreland basin |
Taphonomy
Modes of preservation: | body,original calcite |
Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
Collection excludes: | some macrofossils |
Collection methods: | bulk,field collection |
Reason for describing collection: | taxonomic analysis |
Collectors: | P. Copper |
Taxonomic list comments:Brachiopods only. |
Metadata
Database number: | 158717 | ||
Authorizer: | S. Finnegan, P. Wagner | Enterer: | S. Finnegan, P. Wagner |
Modifier: | S. Finnegan | ||
Created: | 2014-07-22 15:07:34 | Last modified: | 2016-01-07 12:47:00 |
Access level: | the public | Released: | 2014-07-22 15:07:34 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
51869. | K. Dewing. 1999. Late Ordovician and Early Silurian strophomenid brachiopods of Anticosti Island, Quebec, Canada. In A. D. McCracken (ed.), Palaeontographica Canadiana 17:1-143 [S. Finnegan/S. Finnegan] |
Secondary references:
44576 | J. Jin and R. Zhan. 2008. Late Ordovician Orthide and Billingsellide Brachiopods from Anticosti Island, Eastern Canada: Diversity Change Through Mass Extinction. National Research Council of Canada Monograph Series [S. Finnegan/S. Finnegan] |