Mackenzie Mtns, Flood Creek, Sunblood Fm. Orthidiella-"Goniotelina" Fauna (Ordovician to of Canada)

Where: Northwest Territories, Canada (62.1° N, 126.7° W: paleocoordinates 5.2° N, 60.4° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Isograptus caduceus zone, Sunblood Formation, Arenigian to Arenigian (478.6 - 458.4 Ma)

• Isograptus caduceus Zone and lower Orthidiella Zone.

• formation-level stratigraphic resolution

Environment/lithology: gray dolomite and gray limestone

• Environmental call by T. Hanson.
• "254 m of dark grey dolostone, overlain by 127 m of interbedded dark and light grey dolostone (zebra beds). This is, in turn, overlain by 581 m of buff and pink weathering limestone (wine beds), 41 m of interbedded sandstone, siltstone, and dolostone (brown sandstone), and by 420 m of banded light grey and dark grey limestones and dolostones. The highest beds consists [sic] of platy grey limestones, locally biolclastic, containing graptolites and crytolithid trilobites."

Size class: macrofossils

Collection methods: Collection also includes graptolites and crytolithid trilobites.

Primary reference: R. Ludvigsen. 1975. Ordovician formations and faunas, southern Mackenzie Mountains. Canadian Journal of Earth Sciences 12:663-697 [S. Holland/T. Hanson/J. Ju]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 25284: authorized by Steven Holland, entered by Tori Hanson on 06.09.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Ostracoda
 Leperditicopida - Leperditiidae
Eoleperditia bivia
 Palaeocopida - Cryptophyllidae
Cryptophyllus magnus