Bathyurus-Leperditella biofacies, no formation, Blackriverian and Chazyan, North (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: Sunblood Formation, Chazyan (470.0 - 457.3 Ma)

• "Blackriverian and Chazyan. M. Ord." This is now the Sunblood Formation.

• formation-level stratigraphic resolution

Environment/lithology: marine; lime mudstone

• "~= Biofacies I of Ludvigsen, 1978. carbonates "calcilutites" include dessication features, shallow subtidal to intertidal (nearshore) (BA2). ocean facing 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 312: authorized by Jack Sepkoski, entered by Mike Sommers on 20.11.1998

Creative Commons license: CC BY (attribution)

Taxonomic list

• "B.J.R. Hayes 1980. A cluster analysis interpretation of M. Ord. biofacies southern MacKenzie Mtns., Can. Jour. Earth Sci. 17:1377-1388. Ludvigsen, R. 1979. A Trilobite zonation of M. Ord. rockes, southwestern dstrict of MacKenzie. Geol Surv Can Bull 312, 98pp. Ross, 1982 NAPC III"
Show authors, comments, and common names
Stenolaemata
 Cryptostomata - Arthrostylidae
? Ulrichostylus sp.
? Ulrichostylus sp. Bassler 1952
originally entered as "? Ulrichostylus sp."
 Cryptostomata - Ptilodictyidae
? Stictoporella sp., Ptilodictya sp.
? Stictoporella sp. Ulrich 1882
originally entered as "? Stictoporella sp."
Ptilodictya sp. Lonsdale 1839
 Cryptostomata - Rhinidictyidae
Stictopora sp., Pachydictya sp.
Stictopora sp. Hall 1847
Pachydictya sp. Ulrich 1882
originally entered as "Pachydicta sp."
 Trepostomata -
Trepostomata indet.
Trepostomata indet. Ulrich 1882
 Trepostomata - Heterotrypidae
Dekayia sp.
Dekayia sp. Milne-Edwards and Haime 1851
  - Phylloporinidae
Phylloporinidae indet., Chasmatoporella sp.
Chasmatoporella sp. Nekhoroshev 1936
Rhynchonellata
 Orthida - Plectorthidae
Doleroides sp.
Doleroides sp. Cooper 1930
 Orthida - Hesperorthidae
Hesperorthis sp.
Hesperorthis sp. Schuchert and Cooper 1931
 Pentamerida - Camerellidae
Camerella sp.
Camerella sp. Billings 1859
 Rhynchonellida - Trigonirhynchiidae
Rostricellula sp.
Rostricellula sp. Ulrich and Cooper 1942
Strophomenata
 Strophomenida - Furcitellidae
Oepikina sp.
Oepikina sp. Salmon 1942
Ostracoda
 Palaeocopida - Leperditellidae
Leperditella sp.
Trilobita
 Phacopida - Cheiruridae
Ceraurus sp.
Ceraurus sp. Green 1832 trilobite
 Proetida - Bathyuridae
Bathyurus sp.
Bathyurus sp. Billings 1859 trilobite