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: 37.6° N, 120.2° W (Wright 2013)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Walcott Quarry Member (Burgess Shale Formation), Delamaran (509.7 - 505.3 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: CC0 (CC0)

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
  -
Yuknessia simplex Walcott 1919 pterobranch
Crustacea
 Waptiida - Waptiidae
Waptia fieldensis Walcott 1912
Plenocaris
  -
Burgessia
  -
 Odaraiida - Pectocariidae
"Odaraia alata" = Pectocaris
"Odaraia alata" = Pectocaris
Megacheira
 Yohoiida - Yohoiidae
 Leanchoiliida - Leanchoiliidae
Alalcomenaeus cambricus Simonetta 1970
 Radiodonta -
 Radiodonta - Hurdiidae
Hurdia sp. Walcott 1912
Artiopoda
 Vicissicaudata -
 Nektaspidida - Naraoiidae
Naraoia compacta Walcott 1912
  -
Trilobita indet. Walch 1771 trilobite
 Ptychopariida - Alokistocaridae
Ehmaniella burgessensis Rasetti 1951 trilobite
Elrathia permulta Walcott 1918 trilobite
 Ptychopariida -
Elrathina cordillerae Rominger 1887 trilobite
  -
 Agnostida - Peronopsidae
"Ptychagnostus praecurrens" = Pentagnostus praecurrens
"Ptychagnostus praecurrens" = Pentagnostus praecurrens WestergÄrd 1936 artiopod
 Bradoriida - Svealutidae
 Selkirkiimorpha - Selkirkiidae
Selkirkia "sp. A" Walcott 1911
Selkirkia columbia Conway Morris 1977
 Archaeopriapulida - Ottoidae
Ottoia prolifica Walcott 1911
Aculifera
 Sachitida -
Wiwaxia corrugata Matthew 1899
Tergomya
 Scenelloidea - Scenellidae
Scenella amii Matthew 1902
Lingulata
 Acrotretida -
Paterinata
 Paterinida - Paterinidae
Rhynchonellata
 Orthida - Bohemiellidae
Kutorginata
 Kutorginida - Nisusiidae
Hyolitha
 Hyolithida - Hyolithidae
unclassified
  -
"Metazoa "indet. I"" = Animalia
"Metazoa "indet. I"" = Animalia Linnaeus 1758
Listed as "indet. I"
Cambrorhytium fragilis
  -
Cambrorhytium major
  -
Cambrorhytium major Walcott 1908
Hydrozoa
 Hydroida -
Demospongiae
 Protomonaxonida - Hamptoniidae
Hamptonia bowerbanki Walcott 1920 demosponge
 Protomonaxonida - Takakkawiidae
Takakkawia lineata Walcott 1920 demosponge
  - Hazeliidae
Hazelia sp. Walcott 1920 demosponge
 Lithistida - Anthaspidellidae
Capsospongia undulata Walcott 1920 demosponge
Bosworthia
  -
Bosworthia sp. Walcott 1919
Coeloscleritophora
 Chancelloriida - Chancelloriidae
Chancelloria eros Walcott 1920
Waputikia ramosa
  -
Waputikia ramosa Walcott 1919
Florideophyceae
 Ceramiales - Rhodymeniophycidae
Wahpia sp. Walcott 1919
Algae
  -
Dictyophycus gracilis Ruedemann 1931
Marpolia spissa
  -
Marpolia spissa Walcott 1919
Morania
  -
Morania sp. Walcott 1919
Marrellomorpha
 Marrellida -
Marrella splendens Walcott 1912
Pollingeria grandis
  - Wiwaxidae
Pollingeria grandis Walcott 1911