Devon Island Formation, Devon Island, GSC loc. C33695: Lochkovian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Strophomenata
- Orthotetida
- Areostrophiidae
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? Eoschuchertella sp.
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Strophomenata
- Strophomenida
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Strophomenida indet.
Opik 1934
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Rhynchonellata
- Rhynchonellida
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Rhynchonellida indet.
Kuhn 1949
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Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
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Ancillotoechia gutta
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Rhynchonellata
- Orthida
- Rhipidomellidae
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? Dalejina ? devonensis
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Rhynchonellata
- Orthida
- Schizophoriidae
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Schizophoria ? fragilis
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Rhynchonellata
- Orthida
- Draboviidae
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Salopina submurifer
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Rhynchonellata
- Atrypida
- Atrypinidae
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Arctispira canadensis n. gen., n. sp.
Smith 1980
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recombined as Rhynchogilviella canadensis | |||||||
Rhynchonellata
- Spiriferinida
- Cyrtinidae
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Cyrtina sp.
Davidson 1858
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Rhynchonellata
- Spiriferida
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Spiriferida indet.
Waagen 1883
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Rhynchonellata
- Spiriferida
- Ambocoeliidae
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Ambocoelia sp.
Hall 1860
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Rhynchonellata
- Spiriferida
- Delthyrididae
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Howellella sp.
Kozlowski 1946
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Rhynchonellata
- Athyridida
- Athyrididae
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? Protathyris sp.
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see common names |
Geography
Country: | Canada | State/province: | British Columbia |
Coordinates: | 76.3° North, 92.7° West (view map) | ||
Paleocoordinates: | 2.9° South, 25.1° West | ||
Basis of coordinate: | based on nearby landmark | ||
Geographic resolution: | outcrop |
Time
Period: | Devonian | Epoch: | Early/Lower Devonian |
Stage: | Lochkovian | 10 m.y. bin: | Devonian 1 | *Local age/stage: | Early/Lower Lochkovian |
Key time interval: | Lochkovian | ||
Age range of interval: | 419.20000 - 410.80000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Formation: | Devon Island | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: No specific bed level given by Smith. Formation ranges from Late Silurian to Early Devonian; faunal list combined with Smith's correlation and range charts suggests that collection is early Lochkovian. |
Lithology and environment
Primary lithology: | calcareous mudstone | ||
Lithology description: "thinly bedded, laminated, calcareous mudstone" | |||
Environment: | marine indet. | Tectonic setting: | passive margin |
Geology comments: Deposits in this region are of two general kinds: shallow-water stable carbonate platform (generally in the NW part of Arctic Archipelago) and deeper basinal facies (generally to the SE). This collection seems to be in the former, based on Smith's maps.
SEP: environmental call here is impossible without additional information and I have not found a good source yet; lithological description is more consistent with basinal facies |
Taphonomy
Modes of preservation: | replaced with silica |
Collection methods and comments
Collection excludes: | some macrofossils |
Reason for describing collection: | biostratigraphic analysis |
Museum repositories: | GSC |
Taxonomic list comments:Brachipods only. |
Metadata
Database number: | 26567 | ||
Authorizer: | M. Foote | Enterer: | M. Foote |
Modifier: | M. Foote | Research group: | marine invertebrate |
Created: | 2002-10-17 20:09:36 | Last modified: | 2006-09-15 15:13:14 |
Access level: | the public | Released: | 2002-10-17 20:09:36 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
7273. | R. E. Smith. 1980. Lower Devonian (Lochkovian) biostratigraphy and brachiopod faunas, Canadian arctic islands. Geological Survey of Canada Bulletin 308:1-155 [M. Foote/M. Foote/P. Wagner] |