Glassia Skenidioides Community from the upper Whittaker Fm., Avalanche Lake area: Wenlock, Canada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Rhynchonellata - Spiriferida - Reticulariidae
? Spirinella sp. Johnston 1941
Rhynchonellata - Spiriferida - Cyrtiidae
Eospirifer sp. Schuchert 1913
Janius cf. exsul Barrande 1848
? Cyrtia sp. Dalman 1828
Rhynchonellata - Spiriferida - Ambocoeliidae
? Metaplasia sp.
Rhynchonellata - Athyridida - Dayiidae
? Protozeuga sp. Twenhofel 1914
Rhynchonellata - Athyridida - Nucleospiridae
Nucleospira sp. Hall 1859
Rhynchonellata - Athyridida - Meristidae
Merista sp. Suess 1851
Rhynchonellata - Atrypida - Glassiidae
Glassia rotunda
Glassia glaberconcha
Rhynchonellata - Atrypida - Atrypidae
Atrypa sp. Dalman 1828
Rhynchonellata - Orthida - Draboviidae
Salopina sp. Boucot 1960
Rhynchonellata - Orthida - Dicoelosiidae
Dicoelosia parvifrons Johnson et al. 1976
Epitomyonia cf. clausula Johnson et al. 1976
Rhynchonellata - Orthida - Dalmanellidae
Isorthis sp. Kozlowski 1929
Rhynchonellata - Orthida - Hesperorthidae
Ptychopleurella sp. Schuchert and Cooper 1931
Rhynchonellata - Protorthida - Skenidiidae
Skenidioides sp. Schuchert and Cooper 1931
Rhynchonellata - Pentamerida - Subrianidae
Vagranella cf. diversoplicata
Rhynchonellata - Pentamerida - Gypidulidae
? Gypidula sp. Hall 1867
Rhynchonellata - Rhynchonellida - Trigonirhynchiidae
Rhynchotreta sp. Hall 1879
Ancillotoechia pentaformis
Ancillotoechia sp. Havlicek 1959
? Nymphorhynchia sp. Rzhonsnitskaya 1956
Strophomenata - Strophomenida - Sowerbyellidae
Eoplectodonta sp. Kozlowski 1929
Plectodonta sp. Kozlowski 1929
Strophomenata - Strophomenida - Aegiromenidae
Aegiria cf. mariaformis
Strophomenata - Strophomenida - Rafinesquinidae
Leptaena sp. Dalman 1828
Strophomenata - Orthotetida - Chilidiopsidae
? Fardenia sp. Lamont 1935
see common names

Geography
Country:Canada State/province:Northwest Territories
Coordinates: 62.0° North, 127.0° West (view map)
Paleocoordinates:6.0° North, 51.2° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Silurian Epoch:Wenlock
10 m.y. bin:Silurian 2
*Epoch:Late/Upper Wenlock
Key time interval:Wenlock
Age range of interval:433.40000 - 427.40000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Whittaker
Stratigraphic resolution:bed
Stratigraphy comments: Upper Whittaker Formation ("Probably Upper Wenlock").
Lithology and environment
Primary lithology: "limestone"
Includes fossils?Y
Lithology description: "...a single 10 m thick limestone band..." From Over and Chatterton (1987--PBDB ref. 7002), for Whittaker Formation in general: "The dominant lithologies are dark fine-grained limestone, commonly argillaceous and sparry, and dolomitic chert."
Environment:deep subtidal shelf Tectonic setting:passive margin
Geology comments: "The community occurs in an area in which basin margin carbonates interfinger with basinal graptolite-bearing shales. The community setting is typical of the somewhat younger basin-slope deposits common in the northern Cordillera, such as in the Royal Creek and Sekwi areas. The shallow end of BA 4-5 is suggested."
SEP environmental call based on given information
Taphonomy
Collection methods and comments
Collection excludes:some macrofossils
Reason for describing collection:paleoecologic analysis
Collection method comments: Percent abundances given for brachiopods. Diverse trilobites mentioned but not listed (references to relevant work are given).
Metadata
Database number:24930
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Foote Research group:marine invertebrate
Created:2002-08-23 07:38:21 Last modified:2006-09-15 15:14:05
Access level:the public Released:2002-08-23 07:38:21
Creative Commons license:CC BY
Reference information

Primary reference:
6991. A. C. Lenz. 1999. Wenlockian to Pragian brachiopod communities of the northern Canadian Cordillera. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 784-792 [M. Foote/M. Foote/M. Foote]