District of Mackenzie, Prongs Creek Section (Ordovician) (Ordovician of Canada)

Where: Northwest Territories, Canada (65.3° N, 135.7° W: paleocoordinates 12.5° N, 54.6° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Late/Upper Ordovician (458.4 - 443.8 Ma)

• No group or formation names given. Collection from 25 ft. of strata immediately below zero in bed.

Environment/lithology: shallow subtidal; black, gray limestone

• "Limestone, aphanitic, greyish black and dark grey, weathers light grey, light bluish grey, with buff stains, resistant, bedding 1 foot to 8 feet; calcite stringers and vugs common, rare black chert nodules, dolomitic mottles amount to 30% of some beds."

Size class: macrofossils

Collection methods: Collection also includes stromatoporoids and a straight cephalopod.

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 25506: authorized by Steven Holland, entered by Tori Hanson on 14.09.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Strepelasma sp.
Anthozoa
 Stauriida - Streptelasmatidae
Bighornia sp.
Bighornia sp. horn coral
 Stauriida - Stauriidae
Palaeophyllum spp., Palaeophyllum cf. halysitoides
Palaeophyllum spp. Billings 1858 horn coral
 Sarcinulida - Syringophyllidae
Sarcinula sp., Calapoecia sp.
Sarcinula sp. Lamarck 1816 tabulate coral
Calapoecia sp. Billings 1865 tabulate coral
 Heliolitida - Halysitidae
Catenipora sp., Catenipora cf. rubra
Catenipora sp. Lamarck 1816 tabulate coral
Catenipora cf. rubra tabulate coral
 Favositida - Favositidae
"Palaeofavosites spp." = Paleofavosites
"Palaeofavosites spp." = Paleofavosites Twenhofel 1914 tabulate coral