Failleana-Krausella biofacies, no formation name, Chazyan: Chazyan, Canada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Strophomenata - Orthotetida - Triplesiidae
Onychoplecia sp. Cooper 1956
Strophomenata - Strophomenida - Rafinesquinidae
Macrocoelia sp.
synonym of Colaptomena
Rhynchonellata - Rhynchonellida - Trigonirhynchiidae
Rostricellula sp. Ulrich and Cooper 1942
Rhynchonellata - Orthida - Plaesiomyidae
Chaulistomella sp. Cooper 1956
Rhynchonellata - Orthida - Glyptorthidae
Glyptorthis sp. Foerste 1914
Rhynchonellata - Orthida - Plectorthidae
Mimella sp. Cooper 1930
Stenolaemata - Cryptostomata - Rhinidictyidae
Pachydictya sp. Ulrich 1882
Stictopora sp. Hall 1847
Stenolaemata - Cryptostomata - Arthrostylidae
Nematopora sp. Ulrich 1888
Helopora sp. Hall 1851
Ulrichostylus sp. Bassler 1952
Stenolaemata - Phylloporinidae
Phylloporinidae indet. Ulrich 1890
Stenolaemata - Trepostomata
Trepostomata indet. Ulrich 1882
Stenolaemata - Cyclostomata
Cyclostomata indet. Busk 1852
Ostracoda
Ludvigsenites sp.
Ostracoda - Sigmoopsidae
Oecematobolbina sp.
Ostracoda - Palaeocopida - Cryptophyllidae
Cryptophyllus sp. Levinson 1951
Ostracoda - Palaeocopida - Hollinidae
Winchellatia sp.
Eohollina sp.
Ostracoda - Palaeocopida - Lomatopisthiidae
Bolbopisthia sp.
Ostracoda - Podocopida - Steusloffinidae
Steusloffina sp. Teichert 1937
Ostracoda - Podocopida - Beecherellidae
Platyrhomboides sp.
Ostracoda - Podocopida - Bairdiidae
Krausella sp.
Ostracoda - Podocopida - Bairdiocyprididae
Bairdiocypris sp. Kegel 1932
Ostracoda - Leperditellocopida - Primitiidae
Ectoprimitia sp.
Ostracoda - Leperditellocopida - Schmidtellidae
Schmidtella sp. Ulrich 1892
Ostracoda - Leperditellocopida - Aparchitidae
Aparchites sp.
Ostracoda - Hollinocopida - Euprimitiidae
Euprimitia sp.
Ostracoda - Hollinocopida - Tetradellidae
Tetradella sp. Ulrich 1890
Ostracoda - Hollinocopida - Eurychilinidae
Eurychilina sp. Ulrich 1889
Trilobita - Harpetida - Harpetidae
Dolichoharpes sp. Whittington 1949
Trilobita - Lichida - Lichidae
Hemiarges sp. Gürich 1901
Amphilichas sp. Raymond 1905
originally entered as "Amphilicas sp."
Trilobita - Asaphida - Asaphidae
Nahannia sp. Chatterton and Ludvigsen 1976
originally entered as "Nehannia sp."
Isotelus sp. Dekay 1824
Trilobita - Asaphida - Remopleurididae
Remopleurides sp. Portlock 1843
Trilobita - Corynexochida - Styginidae
Failleana sp. Chatterton and Ludvigson 1976
Trilobita - Corynexochida - Illaenidae
Bumastoides sp. (Whittington 1954)
Nanillaenus sp. Jaanusson 1954
Trilobita - Proetida - Dimeropygidae
Dimeropyge sp. Opik 1937
Trilobita - Proetida - Telephinidae
Carrickia sp. Tripp 1965
synonym of Phorocephala
originally entered as "Carrichia sp."
Trilobita - Odontopleurida - Odontopleuridae
Ceratocephala sp. Warder 1838
Apianurus sp. Whittington 1956
Trilobita - Phacopida - Encrinuridae
Cybeloides sp. Slocum 1913
Encrinuroides sp. Reed 1931
originally entered as "Eocrinuroides sp."
Trilobita - Phacopida - Cheiruridae
Acanthoparypha sp. Whittington and Evitt 1953
Pandaspinapyga sp. Esker and Levin 1964
Ceraurinella sp. Cooper 1953
Sphaerexochus sp. Beyrich 1845
Heliomeroides sp. Evitt 1951
Holia sp. Bradley 1930
Trilobita - Phacopida - Pterygometopidae
Calyptaulax sp. Cooper 1930
originally entered as "Calyptaulay sp."
see common names

Geography
Country:Canada State/province:Northwest Territories
Coordinates: 62.0° North, 126.0° West (view map)
Paleocoordinates:5.7° North, 59.6° West
Basis of coordinate:based on political unit
Time
Period:Ordovician Epoch:Middle Ordovician
Stage:Darriwilian
*Period:Middle Ordovician *Local age/stage:Chazyan
Key time interval:Chazyan
Age range of interval:468.10000 - 460.90000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Stratigraphy comments: "M. Ord., Chazyan, ~=biofacies III of Ludvigsen, 1978"
Lithology and environment
Primary lithology: "carbonate"
Environment:offshore shelf Tectonic setting:passive margin
Geology comments: "carbonate? outer shelf (BA5) ocean facing stable shelf"
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Taxonomic list comments:"Hayes, 1980. Can. Jour. Earth Sci. 17:1377-1388. Ludvigsen, 1979. Geol Surv. Can. Bull 312. Ross, 1982. NAPC III"
Metadata
Database number:315
Authorizer:J. Sepkoski Enterer:M. Sommers
Modifier:M. Clapham Research group:marine invertebrate
Created:1998-11-20 10:07:18 Last modified:2022-11-12 11:18:51
Access level:the public Released:1998-11-20 10:07:18
Creative Commons license:CC BY
Reference information

Primary reference:

6928. 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]

Secondary references:

60895 B. J. R. Hayes. 1980. A cluster analysis interpretation of Middle Ordovician biofacies southern MacKenzie Mountains. Canadian Journal of Earth Sciences 17:1377-1388 [M. Uhen/J. Ju/M. Uhen]