Western Prince of Wales Island, Section 10, Unit 2, GSC loc. C26919: Lochkovian, Canada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Conodonta - Ozarkodinida
Ozarkodina remscheidensis Ziegler 1960
recombined as Nicollidina remscheidensis
Strophomenata - Orthotetida - Chilidiopsidae
Iridistrophia thorsteinssoni n. sp.
Strophomenata - Strophomenida
Asymmetrochonetes spinalonga n. gen., n. sp.
Strophomenata - Strophomenida - Douvillinidae
Cymostrophia sp. Caster 1939
Strophomenata - Strophomenida - Amphistrophiidae
Mesodouvillina informal sp. 2 Williams 1950
Rhynchonellata - Pentamerida - Gypidulidae
Gypidula dyerensis n. sp.
Rhynchonellata - Spiriferida - Reticulariidae
Undispirifer laeviplicatus
Rhynchonellata - Spiriferida - Ambocoeliidae
Ambocoelia sp. Hall 1860
Rhynchonellata - Atrypida - Atrypidae
Atrypa informal sp. 1 Dalman 1828
Rhynchonellata - Spiriferinida - Cyrtinidae
Cyrtina maclennani n. sp.
Rhynchonellata - Rhynchonellida - Trigonirhynchiidae
Ancillotoechia magnaplica n. sp.
Rhynchonellata - Rhynchonellida - Machaerariidae
Machaeraria obesa n. sp. Smith 1980
Rhynchonellata - Orthida - Schizophoriidae
Schizophoria protonevadensis n. sp.
Rhynchonellata - Orthida - Dalmanellidae
Protocortezorthis quadriforma n. sp.
see common names

Geography
Country:Canada State/province:Nunavut
Coordinates: 73.5° North, 100.0° West (view map)
Paleocoordinates:2.2° South, 30.2° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Devonian Epoch:Early/Lower Devonian
Stage:Lochkovian 10 m.y. bin:Devonian 1
*International age/stage:Late/Upper Lochkovian
Key time interval:Lochkovian
Age range of interval:419.20000 - 410.80000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Stratigraphic resolution:bed
Stratigraphy comments: Unnamed formation. "Tentative age of early late Lochkovian (conodont fauna 3)..."
Lithology and environment
Primary lithology:gray argillaceous,silty lime mudstone
Secondary lithology:gray argillaceous,silty wackestone
Lithology description: Section as a whole: "Thin-bedded, silty, argillceous lime-mudstone containing argillaceous seams..." This unit: "LIme mudstone-wackestone: thin bedded, undulatory and lenticular in places; med. dk. grey; fetid, slightly silty, green-grey argillaceous sseams; well indurated; rare crinoids, solitary horn corals, brachiopods, also common to abundant fish at upper levels"
Environment:open shallow subtidal 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 is in the former. Smith's Ancillotoechia-Cyrtina Community, which he places in the third of six zones from nearshore to offshore, subtidal, below wave base. "...normal shallow-marine subtidal...quieter water than the G-A-S Community...large numbers of fossil fish in same beds as trilobites, brachiopods, and other normal marine fauna..."
SEP environmental call based on given info and regional context
Taphonomy
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Museum repositories:GSC
Collection method comments: Smith gives specimen counts.
Taxonomic list comments:Focus of the entire monograph is on brachiopods. Other taxa mentioned but not necessarily listed in detail.
Metadata
Also known as:Ancillotoechia-Cyrtina Community
Database number:26506
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Foote Research group:marine invertebrate
Created:2002-10-16 10:14:07 Last modified:2006-09-15 15:13:14
Access level:the public Released:2002-10-16 10:14:07
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]