Ellipsocephaloides silvestris Subzone assemblage: Sunwaptan, Canada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita - Ellipsocephaloididae
Ellipsocephaloides silvestris
Ellipsocephaloides monsensis
Trilobita - Ptychopariida - Elviniidae
Chariocephalus whitfieldi Hall 1863
Drumaspis idahoensis
Trilobita - Ptychopariida - Kingstoniidae
Pugionicauda paradoxa
Trilobita - Ptychopariida - Catillicephalidae
? Triarthropsis sp. Ulrich 1931
Trilobita - Asaphida - Ptychaspididae
Idiomesus granti
Keithiella cf. depressa Rasetti 1944
Ptychaspis sp. Hall 1863
Ptychaspis cf. monsensis
Trilobita - Asaphida - Dikelocephalidae
Prosaukia misa (Owen 1852)
Stigmaspis albertensis
Monocheilus orestes
Trilobita - Olenida - Parabolinoididae
Croixana ambigua
Croixana inflata
? Minkella sp. Lochmann and Hu 1959
Minkella cf. modesta
Trilobita - Olenida - Idahoiidae
Wilbernia pero (Walcott 1890)
Agnostida - Diplagnostidae
Pseudagnostus josepha (Hall 1863)
recombined as Pseudagnostus josephus
see common names

Geography
Country:Canada State/province:Alberta
Coordinates: 51.5° North, 116.2° West (view map)
Paleocoordinates:2.8° South, 75.6° West
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period:Cambrian Epoch:Furongian
10 m.y. bin:Cambrian 4
Key time interval:Sunwaptan
Age range of interval:498.50000 - 485.40000 m.y. ago
Stratigraphy
Formation:Bison Creek
Stratigraphic resolution:group of beds
Stratigraphy comments: approximately 80m above the base of the Bison Creek Formation; most fossiliferous in unit
Lithology and environment
Primary lithology: lithified calcareous "shale"
Secondary lithology:intraclastic,shelly/skeletal lithified grainstone
Includes fossils?Y
Lithology description: at type section Bison Creek consists of 177m of calcareous shales and mudstones, calcarenites, intrarudites, and algal buildups
Environment:shallow subtidal indet. Tectonic setting:passive margin
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:54091
Authorizer:S. Peters Enterer:S. Peters
Modifier:S. Peters Research group:marine invertebrate
Created:2005-09-22 14:53:42 Last modified:2006-09-12 12:29:43
Access level:the public Released:2005-09-22 14:53:42
Creative Commons license:CC BY
Reference information

Primary reference:

14608. S. R. Westrop. 1986. Trilobites of the Upper Cambrian Sunwaptan Stage, southern Canadian Rocky Mountains, Alberta. Palaeontographica Canadiana 3:1-179 [S. Peters/S. Peters/U. Merkel]