Section A1, West of the Fossil Gully Fault (Cambrian of Canada)

Where: British Columbia, Canada (51.4° N, 116.4° W)

• Paleocoordinates: 37.8° N, 118.5° W (Wright 2013)

• coordinate estimated from map

• local area-level geographic resolution

When: Plagiura–Kochaspis trilobite zone, Mount Whyte Formation, Middle Cambrian (506.5 - 497.0 Ma)

• Stage 5

• formation-level stratigraphic resolution

Environment/lithology: basinal (); lithified, muddy packstone

• The oldest beds exposed in the strip are the middle thin interbeds of the shaly mudstone and limestone (MWC on Fig. 3) of the Mount Whyte Formation being the lateral extensions of beds 3 and 4 in Rasetti’s Monarch Mine section No. 17. They are covered mostly by talus and underlie the 30 m-thick, well-bedded limestone unit (W on

•Fig. 2.3; MWL on Fig. 3) forming the steeply downslopedipping cliff just northeast of Gully 5. Most of the beds in this top limestone are recrystallized packstones and

•grainstones replete with fragmental trilobites, brachiopods, and well-preserved molluscs.

Size class: macrofossils

Collection methods: bulk,

Primary reference: T. P. Fletcher and D. H. Collins. 2003. The Burgess Shale and associated Cambrian formations west of the Fossil Gully Fault Zone on Mount Stephen, British Columbia. Canadian Journal of Earth Sciences 40(12):1823-1838 [L. Na/L. Na/L. Na]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 188658: authorized by Lin Na, entered by Lin Na on 11.09.2017

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Artiopoda
 Ptychopariida - Ptychopariidae
"Schistometopus collaris" = Caborcella collaris, Kochiella sp., "Kochaspis eiffelensis" = Kochiella eiffelensis, "Caborcella rara" = Nyella rara, Syspacephalus crassus
"Schistometopus collaris" = Caborcella collaris Rasetti 1951 trilobite
Rasetti, 1951
Kochiella sp. Poulsen 1927 trilobite
Rasetti, 1951
"Kochaspis eiffelensis" = Kochiella eiffelensis Rasetti 1951 trilobite
Rasetti 1951
"Caborcella rara" = Nyella rara Rasetti 1951 trilobite
Rasetti 1951
Syspacephalus crassus Rasetti 1951 trilobite
 Ptychopariida - Alokistocaridae
"Alokistocare cleora" = Amecephalus cleora
"Alokistocare cleora" = Amecephalus cleora Walcott 1917 trilobite
Walcott 1917
  - Antagmidae
Onchocephalus maior
Onchocephalus maior Rasetti 1951 trilobite
Rasetti 1951
 Corynexochida - Zacanthoididae
Fieldaspis furcata, Fieldaspis celer, Fieldaspis bilobata
Fieldaspis furcata trilobite
Rasetti 1951
Fieldaspis celer Walcott 1917 trilobite
Walcott 1917
Fieldaspis bilobata Rasetti 1951 trilobite
Walcott 1917
  -
Loxopeltis problematica
Loxopeltis problematica Rasetti 1957 trilobite
Rasetti, 1957
Kutorginata
 Kutorginida - Nisusiidae
Nisusia sp.
Nisusia sp. Walcott 1905
Stenothecoida
 Cambridioida - Cambridiidae
Stenothecoides spp.
Stenothecoides spp. Resser 1938
Tergomya
 Scenelloidea - Scenellidae
Scenella sp.
Scenella sp. Billings 1872