Mackenzie Mtns, Whittaker Range, Whittaker Fm Strophomena-Ceraurus Fauna (Ordovician of Canada)

Where: Northwest Territories, Canada (62.5° N, 124.8° W: paleocoordinates 6.7° N, 57.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Whittaker Formation, Shermanian (457.3 - 449.6 Ma)

• formation-level stratigraphic resolution

Environment/lithology: deep subtidal; gray, argillaceous limestone and gray dolomite

• Quiet, deeper water environment with a soft muddy substrate.
• Gray to dark gray argillaceous limestone; dark gray dolostone.

Size class: macrofossils

Collection methods: Collection also includes isotelids, otarionids, lichids, proetids, odontopleurids, illaenids, and calymenids.

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 25315: authorized by Steven Holland, entered by Tori Hanson on 08.09.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Shaerexochus sp., Dilochoharpes sp.
Anthozoa
 Stauriida - Streptelasmatidae
Streptelasma sp.
Streptelasma sp. Hall 1847 horn coral
 Heliolitida - Halysitidae
Catenipora sp.
Catenipora sp. Lamarck 1816 tabulate coral
Ostracoda
 Podocopida - Bairdiidae
Krausella sp.
Krausella sp. ostracod
 Palaeocopida - Tetradellidae
Ceratopsis sp., ? Tetradella sp.
Ceratopsis sp. Ulrich 1894 ostracod
? Tetradella sp. Ulrich 1890 ostracod
 Palaeocopida - Bolliidae
Dicranella sp.
Trilobita
 Asaphida - Asaphidae
Anataphrus sp.
Anataphrus sp. Whittington 1954 trilobite
 Asaphida - Remopleurididae
Hypodicranotus sp.
Hypodicranotus sp. Whittington 1952 trilobite
 Lichida - Lichidae
Hemiarges sp.
Hemiarges sp. Gürich 1901 trilobite
 Phacopida - Pterygometopidae
Calyptaulax sp., Chasmops sp.
Calyptaulax sp. Cooper 1930 trilobite
Chasmops sp. M'Coy 1849 trilobite
 Phacopida - Encrinuridae
Cybeloides sp.
Cybeloides sp. Slocum 1913 trilobite
 Phacopida - Cheiruridae
Sphaerocoryphe sp., "Ceraurus cf. numitor" = Borealaspis numitor, Ceraurinella sp., "Remipyga cf. daedalus" = Ceraurinus daedalus, "Remipyga sp." = Ceraurinus, Holia sp., Ceraurus sp., Acanthoparypha sp.
Sphaerocoryphe sp. Angelin 1854 trilobite
"Ceraurus cf. numitor" = Borealaspis numitor Billings 1866 trilobite
"Ceraurus" cf. numitor
Ceraurinella sp. Cooper 1953 trilobite
"Remipyga cf. daedalus" = Ceraurinus daedalus Cox 1933 trilobite
"Remipyga sp." = Ceraurinus Barton 1913 trilobite
Holia sp. Bradley 1930 trilobite
Ceraurus sp. Green 1832 trilobite
Ceraurus sp. Ceraurus sp. and "Ceraurus" sp.
Acanthoparypha sp. Whittington and Evitt 1953 trilobite
 Proetida - Dimeropygidae
Dimeropyge sp.
Dimeropyge sp. Opik 1937 trilobite
Gastropoda
 Bellerophontida - Bucaniidae
Phragmolites sp.
Phragmolites sp. Conrad 1838 snail
Strophomenata
 Strophomenida - Strophomenidae
Strophomena sp.
Strophomena sp. Rafinesque and De Blainville 1824
Rhynchonellata
 Orthida - Platyorthidae
Diceromyonia sp.
Diceromyonia sp. Wang 1949
 Orthida - Plaesiomyidae
Dinorthis sp.
Dinorthis sp. Hall and Clarke 1892
 Rhynchonellida - Rhynchotrematidae
Lepidocyclus sp.
Lepidocyclus sp. Wang 1949
 Atrypida - Cyclospiridae
? Cyclospira sp.
? Cyclospira sp. Hall and Clarke 1893