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
? Eoschuchertella sp.
Strophomenata - Strophomenida
Strophomenida indet. Opik 1934
Rhynchonellata - Rhynchonellida
Rhynchonellida indet. Kuhn 1949
Rhynchonellata - Rhynchonellida - Trigonirhynchiidae
Ancillotoechia gutta
Rhynchonellata - Orthida - Rhipidomellidae
? Dalejina ? devonensis
Rhynchonellata - Orthida - Schizophoriidae
Schizophoria ? fragilis
Rhynchonellata - Orthida - Draboviidae
Salopina submurifer
Rhynchonellata - Atrypida - Atrypinidae
Arctispira canadensis n. gen., n. sp. Smith 1980
recombined as Rhynchogilviella canadensis
Rhynchonellata - Spiriferinida - Cyrtinidae
Cyrtina sp. Davidson 1858
Rhynchonellata - Spiriferida
Spiriferida indet. Waagen 1883
Rhynchonellata - Spiriferida - Ambocoeliidae
Ambocoelia sp. Hall 1860
Rhynchonellata - Spiriferida - Delthyrididae
Howellella sp. Kozlowski 1946
Rhynchonellata - Athyridida - Athyrididae
? Protathyris sp.
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]