Churchill River Exposure (Ordovician of Canada)

Where: Manitoba, Canada (58.0° N, 95.0° W: paleocoordinates 7.6° S, 52.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: 1 Member (Surprise Creek Formation), Maysvillian (450.2 - 449.6 Ma)

• Was Edenian - Richmondian.

• member-level stratigraphic resolution

Environment/lithology: dolomitic, gray limestone

• Environmental call by T. Hanson
• "Limestone, slightly dolomitic, light yellowish gray, microcrystalline, fossiliferous, buff to gray weathering, breaking in irregular platy slabs 1-2 inches thick."

Size class: macrofossils

Primary reference: S. J. Nelson. 1963. Ordovician paleontology of the Northern Hudson Bay lowland. Geological Society of America Memoir 90:1-152 [S. Holland/T. Hanson/T. Hanson]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 14120: authorized by Steven Holland, entered by Tori Hanson on 15.05.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Thaerondonta sp.
Strophomenata
 Strophomenida - Furcitellidae
Megamyonia raymondi, Megamyonia nitens, "Rafinesquina lata" = Oepikina lata, "Rafinesquina lata" = Oepikina lata
Megamyonia raymondi
Megamyonia raymondi (Bradley) (?)
Megamyonia nitens Billings 1860
Megamyonia nitens (Billings) (?)
"Rafinesquina lata" = Oepikina lata Whiteaves 1896
"Rafinesquina lata" = Oepikina lata Whiteaves 1896
Rafinesquina lata Whiteaves var.
 Strophomenida - Rafinesquinidae
Rafinesquina pronis
 Strophomenida - Strophomenidae
"Strophomena ? hecuba" = Tetraphalerella hecuba, "Strophomena planocorrugata" = Rugomena planocorrugata, Strophomena spp. n. sp., "Strophomena ? fluctuosa" = Nasutimena fluctuosa
"Strophomena ? hecuba" = Tetraphalerella hecuba Billings 1860
Strophomena hecuba Billings (?)
"Strophomena planocorrugata" = Rugomena planocorrugata Twenhofel 1928
Strophomena spp. n. sp. Rafinesque and De Blainville 1824
"Strophomena ? fluctuosa" = Nasutimena fluctuosa Billings 1860
Strophomena fluctuosa Billings (?)
Rhynchonellata
 Rhynchonellida - Rhynchotrematidae
Hypsiptycha janea, "Rhynchotrema ? kananaskia" = Hiscobeccus kananaskia
Hypsiptycha janea Billings 1866
Hypsiptycha janea (Billings) (?)
"Rhynchotrema ? kananaskia" = Hiscobeccus kananaskia Wilson 1926
Rhynchotrema kananaskia Wilson (?)
Gastropoda
 Murchisoniina - Trochonematidae
Trochonema coxi
Trochonema coxi Wilson 1938 snail
Anthozoa
 Stauriida - Streptelasmatidae
Lobocorallium goniophylloides
 Heliolitida - Plasmoporidae
Plasmopora lambei
Plasmopora lambei tabulate coral