BA -380 [Great Phyllopod Bed, Walcott Quarry Mbr, Burgess Shale Fm] (Cambrian of Canada)

Where: British Columbia, Canada (51.4° N, 120.2° W: paleocoordinates 6.7° N, 89.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Walcott Quarry Member (Burgess Shale Formation), Delamaran (513.0 - 505.0 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 20 mm thick bed, 380 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 84419: 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.
Morania
  -
Morania sp. Walcott 1919
unclassified
  -
Ottoia prolifica
  - Ottoiidae
Ottoia prolifica Walcott 1911
Selkirkiidae
  - Selkirkiidae
Odaraia
  -
 Radiodonta - Anomalocarididae
"Laggania cambrica" = Peytoia
"Laggania cambrica" = Peytoia
Sidneyia
  -
 Bradoriida - Svealutidae
Molaria
  -
Burgessia
  -
Habelia
  -
Trilobita
 Agnostida - Ptychagnostidae
"Ptychagnostus praecurrens" = Pentagnostus praecurrens
"Ptychagnostus praecurrens" = Pentagnostus praecurrens Westergard 1936 trilobite
 Aulacopleurida - Alokistocaridae
 Ptychopariida - Ptychopariidae
Crustacea
 Canadaspidida -
 Canadaspidida - Canadaspididae
Canadaspis perfecta Walcott 1912
 Waptiida - Waptiidae
Waptia fieldensis Walcott 1912
Marrella
  -
 Nektaspida -
Naraoia compacta Walcott 1912
Rhynchonellata
 Orthida - Bohemiellidae
Lingulata
 Lingulida - Obolidae
Burgessochaeta
  -
 Sachitida -
Wiwaxia corrugata Walcott 1911
Odontogriphus
  -
Odontogriphus omalus Conway-Morris 1976
Oesia
  -
Pollingeria
  -
Demospongea
 Protomonaxonida - Takakkawiidae
Takakkawia lineata Walcott 1920 demosponge
 Protomonaxonida - Hazeliidae
Hazelia sp. Walcott 1920 demosponge