BA -380 [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 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.
unclassified
  -
Lingulata
 Lingulida - Obolidae
Rhynchonellata
 Orthida - Bohemiellidae
Burgessochaeta
  -
 Sachitida -
Wiwaxia corrugata Matthew 1899
Odontogriphus
  -
Odontogriphus omalus Conway-Morris 1976
Molaria
  -
Deuteropoda
 Hymenocarina - Perspicarididae
Crustacea
 Canadaspidida - Canadaspididae
Canadaspis perfecta Walcott 1912
 Waptiida - Waptiidae
Waptia fieldensis Walcott 1912
 Radiodonta -
Artiopoda
 Vicissicaudata -
 Agnostida - Peronopsidae
"Ptychagnostus praecurrens" = Pentagnostus praecurrens
"Ptychagnostus praecurrens" = Pentagnostus praecurrens WestergÄrd 1936
 Nektaspidida - Naraoiidae
Naraoia compacta Walcott 1912
Trilobita
 Ptychopariida - Alokistocaridae
 Ptychopariida - Ptychopariidae
Elrathina cordillerae Rominger 1887 trilobite
Habelia
  -
 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
Demospongiae
 Protomonaxonida - Hazeliidae
Hazelia sp. Walcott 1920 demosponge
 Protomonaxonida - Takakkawiidae
Takakkawia lineata Walcott 1920 demosponge
 Gephyrea - Pikaidae
Oesia sp. Walcott 1911
Morania
  -
Morania sp. Walcott 1919
Marrellomorpha
 Marrellida -
Pollingeria grandis
  - Wiwaxidae
Pollingeria grandis Walcott 1911