Southwestern District of Mackenzie, Sunblood Range (P-55) (Ordovician of Canada)

Also known as GSC Loc. No. C-26341

Where: Northwest Territories, Canada (61.7° N, 125.9° W: paleocoordinates 5.6° N, 59.9° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Bathyurus sunbloodensis trilobite zone, Sunblood Formation, Whiterockian (470.0 - 457.3 Ma)

Environment/lithology: shallow subtidal; limestone

• Environment based on Tremblay and Westrop (1991) description of Sunblood Formation

Size classes: macrofossils, microfossils

Preservation: replaced with silica

Collected by Rolf Ludvigsen in 1971-1973; reposited in the GSC

Collection methods: chemical,

Primary reference: M. J. Copeland. 1974. Middle Ordovician ostracoda from southwestern District of Mackenzie. Canada Geological Survey Bulletin (244)1-55 [S. Holland/T. Hanson/T. Hanson]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 102252: authorized by Melanie Hopkins, entered by Melanie Hopkins on 12.01.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Ostracoda
 Leperditicopida - Leperditiidae
Eoleperditia sp.
Eoleperditia sp. Swartz 1949 ostracod
 Leperditicopida - Isochilinidae
? Isochilina sp.
? Isochilina sp. Jones 1858 ostracod
 Palaeocopida - Cryptophyllidae
Cryptophyllus magnus
 Palaeocopida - Leperditellidae
Leperditella cf. germana
 Leperditellocopida - Schmidtellidae
? Schmidtella cf. subrotunda
Trilobita
 Phacopida - Cheiruridae
"Cydonocephalus cf. torulus" = Kawina torulus
"Cydonocephalus cf. torulus" = Kawina torulus Whittington 1963 trilobite
originally identified as Kawina sp. by Ludvigsen 1975 (Pl. 1, fig. 19)
 Proetida - Bathyuridae
Bathyurus sunbloodensis n. sp.
Bathyurus sunbloodensis n. sp. Tremblay and Westrop 1991 trilobite
originally identified as "Goniotelina" sp. by Ludvigsen 1975 (pl. 1, fig. 11-13)