District of Mackenzie, Keele Range Section Unit 1 (Silurian of Canada)

Where: Northwest Territories, Canada (67.0° N, 140.8° W: paleocoordinates 13.4° N, 48.4° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Silurian (443.8 - 419.2 Ma)

Environment/lithology: shallow subtidal; gray dolomite and chert

• "Siliceous dolomite, finely to very finely crystalline, dark grey, grey, weathers grey, brownish grey, with lichen stains, bedding 3 inches to 2 feet; some beds biostromal, some beds with about 5% chert nodules."

Size class: macrofossils

Collection methods: Collection includes a straight cephalopod, stromatoporoids, and rugose corals spp.

Primary reference: B. S. Norford. 1963. Reconnaissance of the Ordovician and Silurian rocks of Northern Yukon Territory. Geological Survey of Canada Department of Mines and Technical Surveys, Paper 63(39):1-139 [S. Holland/T. Hanson/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 25553: authorized by Steven Holland, entered by Tori Hanson on 16.09.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhynchonellata
 Atrypida - Septatrypidae
Atrypella cf. scheii
Atrypella cf. scheii Holtedahl 1914
Anthozoa
 Favositida - Syringolitidae
Parafavosites sp.
Parafavosites sp. Orlov 1930 tabulate coral
 Favositida - Favositidae
Favosites sp.
Favosites sp. Lamarck 1816 tabulate coral
 Favositida - Parastriatoporidae
? Parastriatopora sp.
? Parastriatopora sp. Sokolov 1949 tabulate coral
 Cystiphyllida - Tryplasmatidae
Tryplasma sp.
Tryplasma sp. Lonsdale 1845 horn coral
 Cystiphyllida - Cystiphyllidae
Cystiphyllum sp.
Cystiphyllum sp. Lonsdale 1839 horn coral
 Stauriida - Disphyllidae
cf. Disphyllum sp.
cf. Disphyllum sp. Fromentel 1861 horn coral