District of Mackenzie Ceraurinella longispina zone (Ordovician to of Canada)

Where: Northwest Territories, Canada (62.0° N, 127.0° W: paleocoordinates 7.5° N, 57.8° W)

• coordinate estimated from map

• basin-level geographic resolution

When: Ceraurinella longispina trilobite zone, Esbataottine & Sunblood Formation, Blackriveran to Blackriveran (457.3 - 449.6 Ma)

• Collections derived from two formations

Environment/lithology: lithified, gray limestone

• Environmental and Tectonic Setting calls by S.M. Holland

Size class: macrofossils

Preservation: replaced with silica

Collection methods: bulk, chemical,

Primary reference: R. Ludvigsen. 1979. A trilobite zonation of Middle Ordovician rocks, southwestern District of Mackenzie. Geological Survey of Canada Bulletin 312:1-98 [S. Holland/S. Holland/J. Ju]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 24634: authorized by Steven Holland, entered by Steven Holland on 12.08.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Fistuliporida indet.
Strophomenata
 Orthotetida - Triplesiidae
"Triplesia cf. subcarinatina" = Triplesia subcarinata
"Triplesia cf. subcarinatina" = Triplesia subcarinata Cooper 1956
 Strophomenida - Sowerbyellidae
Sowerbyella variabilis
 Strophomenida - Furcitellidae
Oepikina sp.
Oepikina sp. Salmon 1942
 Strophomenida - Strophomenidae
Tetraphalerella planobesa, Holtedahlina sp.
Holtedahlina sp. Foerste 1924
Rhynchonellata
 Protorthida - Skenidiidae
"Skenidioides cf. anthonensis" = Skenidioides anthonense
"Skenidioides cf. anthonensis" = Skenidioides anthonense Sardeson 1894
 Orthida - Hesperorthidae
Hesperorthis sp.
Hesperorthis sp. Schuchert and Cooper 1931
 Orthida - Plectorthidae
Doleroides sp.
Doleroides sp. Cooper 1930
Stenolaemata
 Trepostomida -
? Calopora sp.
? Calopora sp. Hall 1851
 Cryptostomata - Arthrostylidae
Arthrostylidae indet., ? Helopora sp.
? Helopora sp. Hall 1851
 Cryptostomata - Rhinidictyidae
Stictopora spp.
Stictopora spp. Hall 1847
 Cryptostomata - Ptilodictyidae
Ptilodictya sp., Stictoporella spp.
Ptilodictya sp. Lonsdale 1839
Stictoporella spp. Ulrich 1882
 Cryptostomata - Escharoporidae
? Oanduella sp.
Ostracoda
 Hollinocopida - Eurychilinidae
Eurychilina prairiensis
 Hollinocopida - Oepikellidae
Oepikella cf. labrosa
 Leperditellocopida - Aparchitidae
Aparchites cf. fimbriatus
Aparchites cf. fimbriatus ostracod
"Aparchites"
 Leperditellocopida - Schmidtellidae
Schmidtella affinis
 Leperditicopida - Leperditiidae
Eoleperditia sp.
Eoleperditia sp. Swartz 1949 ostracod
 Podocopida - Bairdiidae
Krausella inaequalis
 Podocopida - Bairdiocyprididae
Bairdiocypris cf. granti
 Palaeocopida - Lomatopisthiidae
Bolbopisthia cf. lenzi
Trilobita
 Corynexochida - Illaenidae
Bumastoides sp.
Bumastoides sp. Whittington 1954 trilobite
 Phacopida - Pterygometopidae
Calyptaulax sp.
Calyptaulax sp. Cooper 1930 trilobite
 Phacopida - Encrinuridae
Walencrinuroides rolfi, Cybeloides cimelia
Walencrinuroides rolfi Moss and Westrop 2014 trilobite
Cybeloides cimelia Chatterton and Ludvigsen 1976 trilobite
 Phacopida - Cheiruridae
Ceraurinella media, Ceraurinella longispina, "Ceraurinella arctica" = Arcticeraurinella arctica, Ceraurus hirsuitus, Sphaerexochus atacius
Ceraurinella media Ludvigsen 1979 trilobite
Ceraurinella longispina Ludvigsen 1979 trilobite
"Ceraurinella arctica" = Arcticeraurinella arctica Ludvigsen 1979 trilobite
Ceraurus hirsuitus Ludvigsen 1979 trilobite
Sphaerexochus atacius Ludvigsen 1979 trilobite
 Harpetida - Harpetidae
Dolichoharpes aff. reticulata
Dolichoharpes aff. reticulata Whittington 1949 trilobite
 Asaphida - Asaphidae
Anataphrus cf. borraeus, Isotelus sp.
Anataphrus cf. borraeus Whittington 1954 trilobite
Isotelus sp. Dekay 1824 trilobite
 Lichida - Lichidae
Hemiarges sp.
Hemiarges sp. Gürich 1901 trilobite
 Odontopleurida - Odontopleuridae
Ceratocephala triacantheis
Ceratocephala triacantheis Whittington and Evitt 1953 trilobite