Mackenzie Mountains, section 25-7, bioherm 2 (Cambrian of Canada)

Also known as Reef 3762

Where: Northwest Territories, Canada (63.7° N, 129.1° W: paleocoordinates 1.2° S, 67.9° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Sekwi Formation, Botomian (516.0 - 512.9 Ma)

• lower Bonnia-Olenellus zone, samples 82 and 83

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified limestone

• archaeocyath-microbial bioherm

Size class: macrofossils

Collection methods: peel or thin section,

Primary reference: L. G. Voronova, N. A. Drozdova, B. A. Zhegallo, A. Yu Zhuravlev, A. Yu Rozanov, T. A. Sayutina, and G. T. Ushatinskaya. 1987. Fossils from the Lower Cambrian of the MacKenzie Mountains (Canada). Trudy Paleontologicheskogo Instituta 224:1-88 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 80961: authorized by Wolfgang Kiessling, entered by Uta Merkel on 23.05.2008, edited by Phil Novack-Gottshall

Creative Commons license: CC BY (attribution)

Taxonomic list

 Tabulaconida - Tabulaconidae
 Archaeocyathida - Pycnoidocoscinidae
Pycnoidocoscinus serratus Kawase and Okulitch 1957 archaeocyath sponge
 Archaeocyathida - Archaeosyconidae
? Archaeosycon cf. evansi archaeocyath sponge
 Archaeocyathida - Metacyathidae
"Metacyathus caribouensis" = Metaldetes
"Metacyathus caribouensis" = Metaldetes archaeocyath sponge
 Ajacicyathida - Ethmophyllidae
Cordilleracyathus blussoni Handfield 1971 archaeocyath sponge
 Ajacicyathida - Fallocyathidae
Sekwicyathus nahanniensis Handfield 1971 archaeocyath sponge
 Ajacicyathida - Tumulocyathidae
"Tumulocyathellus rozanovi" = Plicocyathus
"Tumulocyathellus rozanovi" = Plicocyathus archaeocyath sponge
 Hyolithelminthida - Hyolithellidae
Hyolithellus vladimirovae Rozanov and Missarzhevsky 1966
  - Ludloviaceae
  - Chabakoviacea
  - Chabakoviacea
  - Chabakoviacea
 Oscillatoriales - Girvanellaceae
Girvanella problematica Nicholson and Etheridge 1878
  - Garwoodiaceae