BA -250 [Great Phyllopod Bed, Walcott Quarry Mbr, Burgess Shale Fm] (Cambrian of Canada)

Where: British Columbia, Canada (51.4° N, 116.5° W: paleocoordinates 3.7° S, 80.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Walcott Quarry Member (Burgess Shale Formation), Delamaran (511.2 - 506.5 Ma)

• STRATIGRAPHIC RELATIONS: From the Great Phyllopod Bed of the Walcott Quarry Member, Burgess Shale Fm, Chancellor Gp, which overlies the Wash Limestone Mbr, and is overlain by the Raymond Quarry Shale Mbr. AGE: early Middle Cambrian, Delamaran North American stage. STRATIGRAPHIC POSITION: From 35 mm thick bed, 250 cm below "lower ginger layer, representing the base of the "Phyllopod Bed".

• bed-level stratigraphic resolution

Environment/lithology: deep-water; lithified, calcareous siltstone and lithified, cherty/siliceous mudstone

• ENVIRONMENT: Deep-water depositional environment.
• SPECIFIC LITHOLOGY: Cm-scale interbedded siliceous mudstone and calcisiltites. LITHIFICATION: Lithified.

Size class: macrofossils

Preservation: cast, mold/impression, adpression, soft parts

Reposited in the ROM

Collection methods: quarrying,

• COLLECTOR: Royal Ontario Museum staff. REPOSTORY: Royal Ontario Museum (ROM).

Primary reference: J.-B. Caron and D. A. Jackson. 2008. Paleoecology of the Greater Phyllopod Bed community, Burgess Shale. Palaeogeography, Palaeoclimatology, Palaeoecology 258:222-256 [A. Hendy/A. Hendy/A. Hendy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 84431: authorized by Austin Hendy, entered by Austin Hendy on 18.10.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for all taxa. NOMENCLATURE: Not an authoritative publication, but with modern nomenclature, and species-resolution identifications.
unclassified
  -
Eocrinoidea
 Gogiida - Eocrinidae
Gogia sp. Walcott 1917
Pterobranchia
 Dendroidea -
Hyolitha
 Hyolithida - Hyolithidae
Lingulata
 Acrotretida -
Paterinata
 Paterinida - Paterinidae
Kutorginata
 Kutorginida - Nisusiidae
Rhynchonellata
 Orthida - Bohemiellidae
 Sachitida -
Wiwaxia corrugata Matthew 1899
Tergomya
 Scenelloidea - Scenellidae
Scenella amii Matthew 1902
Plenocaris
  -
Molaria
  -
Crustacea
 Waptiida - Waptiidae
Waptia fieldensis Walcott 1912
Megacheira
 Leanchoiliida - Leanchoiliidae
 Yohoiida - Yohoiidae
 Radiodonta -
 Radiodonta - Hurdiidae
Hurdia sp. Walcott 1912
Artiopoda
 Vicissicaudata -
 Agnostida - Peronopsidae
"Ptychagnostus praecurrens" = Pentagnostus praecurrens
"Ptychagnostus praecurrens" = Pentagnostus praecurrens WestergÄrd 1936
 Nektaspidida - Naraoiidae
Naraoia compacta Walcott 1912
Trilobita
  -
Trilobita indet. Walch 1771 trilobite
 Ptychopariida - Alokistocaridae
Elrathia permulta Walcott 1918 trilobite
 Ptychopariida - Ptychopariidae
Elrathina cordillerae Rominger 1887 trilobite
 Bradoriida - Svealutidae
 Odaraiida - Pectocariidae
"Odaraia alata" = Pectocaris
"Odaraia alata" = Pectocaris
Burgessia
  -
 Archaeopriapulida - Ottoidae
Ottoia prolifica Walcott 1911
 Archaeopriapulida - Selkirkiidae
Selkirkia "sp. A" Walcott 1911
Selkirkia columbia Conway Morris 1977
unclassified
  -
"Metazoa "indet. I"" = Animalia
"Metazoa "indet. I"" = Animalia Linnaeus 1758
Listed as "indet. I"
Cambrorhytium major
  -
Cambrorhytium major Walcott 1908
Cambrorhytium fragilis
  -
Demospongiae
 Lithistida - Anthaspidellidae
Capsospongia undulata Walcott 1920 demosponge
 Protomonaxonida - Hazeliidae
Hazelia sp. Walcott 1920 demosponge
 Protomonaxonida - Hamptoniidae
Hamptonia bowerbanki Walcott 1920 demosponge
 Protomonaxonida - Takakkawiidae
Takakkawia lineata Walcott 1920 demosponge
Bosworthia
  -
Bosworthia sp. Walcott 1919
Coeloscleritophora
 Chancelloriida - Chancelloriidae
Chancelloria eros Walcott 1920
Marpolia spissa
  -
Marpolia spissa Walcott 1919
Morania
  -
Morania sp. Walcott 1919
Waputikia ramosa
  -
Waputikia ramosa Walcott 1919
Florideophyceae
 Ceramiales - Rhodymeniophycidae
Wahpia sp. Walcott 1919
Yuknessia simplex
  -
Yuknessia simplex Walcott 1919
Algae
  -
Dictyophycus gracilis Ruedemann 1931
Marrellomorpha
 Marrellida -
Pollingeria grandis
  - Wiwaxidae
Pollingeria grandis Walcott 1911