Ceraurinella-Cybeloides biofacies, no formation name, Blackriverian and Chazyan, (Ordovician of Canada)

Where: Northwest Territories, Canada (62.0° N, 126.0° W: paleocoordinates 5.7° N, 59.6° W)

• coordinate based on political unit

When: Chazyan (470.0 - 457.3 Ma)

• "M. Ord. ~=Biofacies II of Ludvigsen, 1978"

Environment/lithology: deep subtidal shelf; carbonate

• "carbonate? subtidal, mid-shelf (BA4). ocean facing stable shelf"

Size class: macrofossils

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: general faunal/floral analysis

PaleoDB collection 314: authorized by Jack Sepkoski, entered by Mike Sommers on 20.11.1998

Creative Commons license: CC BY (attribution)

Taxonomic list

• "Hayes 1980. Can. Jour. Earth Sci. 17:1377-1388. Ludvigsen 1979, Geol. Surv. Can. Bull 312. Ross, 1982 NAPC III"
Show authors, comments, and common names
Strophomenata
 Orthotetida - Triplesiidae
Triplesia sp.
Triplesia sp. Hall 1859
 Strophomenida - Sowerbyellidae
Sowerbyella sp.
Sowerbyella sp. Jones 1928
 Strophomenida - Furcitellidae
Oepikina sp.
Oepikina sp. Salmon 1942
 Strophomenida - Strophomenidae
Tetraphalerella sp.
Rhynchonellata
 Protorthida - Skenidiidae
Skenidioides sp.
Skenidioides sp. Schuchert and Cooper 1931
 Orthida - Hesperorthidae
Hesperorthis sp.
Hesperorthis sp. Schuchert and Cooper 1931
 Orthida - Plectorthidae
Doleroides sp.
Doleroides sp. Cooper 1930
Stenolaemata
  - Phylloporinidae
Phylloporinidae indet., Chasmatoporella sp.
Chasmatoporella sp. Nekhoroshev 1936
 Trepostomida - Monticuliporidae
? Peronopora sp.
? Peronopora sp. Nicholson 1881
originally entered as "? Peronopora sp."
 Cryptostomata - Arthrostylidae
? Ulrichostylus sp., Nematopora sp.
? Ulrichostylus sp. Bassler 1952
originally entered as "? Ulrichostylus sp."
Nematopora sp. Ulrich 1888
 Cryptostomata - Rhinidictyidae
Stictopora sp., Athrophragma sp.
Stictopora sp. Hall 1847
Athrophragma sp.
originally entered as "Anthrophragma sp."
 Cryptostomata - Ptilodictyidae
Ptilodictya sp., Stictoporella sp.
Ptilodictya sp. Lonsdale 1839
Stictoporella sp. Ulrich 1882
 Cryptostomata - Escharoporidae
Oanduella sp., ? Proavella sp., Graptodictya sp., Escharopora sp.
? Proavella sp.
originally entered as "? Proavella sp."
Graptodictya sp. Ulrich 1882
Escharopora sp. Hall 1847
 Trepostomata -
Trepostomata indet.
Trepostomata indet. Ulrich 1882
2 types
 Trepostomata - Halloporidae
? Hallopora sp.
? Hallopora sp. Bassler 1911
originally entered as "? Hallopora sp."
Ostracoda
 Hollinocopida - Tetradellidae
Tetradella sp.
Tetradella sp. Ulrich 1890 ostracod
Trilobita
 Corynexochida - Illaenidae
Bumastoides sp.
Bumastoides sp. Whittington 1954 trilobite
 Phacopida - Pterygometopidae
Calyptaulax sp.
Calyptaulax sp. Cooper 1930 trilobite
 Phacopida - Encrinuridae
Encrinuroides sp., Cybeloides sp.
Encrinuroides sp. Reed 1931 trilobite
Cybeloides sp. Slocum 1913 trilobite
 Phacopida - Cheiruridae
Ceraurinella sp., Ceraurus sp.
Ceraurinella sp. Cooper 1953 trilobite
Ceraurus sp. Green 1832 trilobite
 Asaphida - Asaphidae
Anataphrus sp.
Anataphrus sp. Whittington 1954 trilobite