Silliman's Fossil Mount Cephalopods (Foerste 1928) (Ordovician to of Canada)

Where: Nunavut, Canada (63.7° N, 69.0° W: paleocoordinates 10.1° S, 38.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Trentonian to Trentonian (457.3 - 445.5 Ma)

Environment/lithology: dolomitic limestone and calcareous shale

• Environmental call by T. Hanson.
• "Throughout the Mount, the top 50 feet of these beds consists of massive dolomitic limestone, the next 75 feet of thin-bedded limestone and dolomite, and the lower 175 feet of calcareous shale with some interbedded limestone."

Size class: macrofossils

Primary reference: A. K. Miller, W. Youngquist, and C. Collinson. 1954. Ordovician cephalopod fauna of Baffin Island. Geological Society of America Memoir 62:1-234 [S. Holland/T. Hanson/T. Hanson]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 24115: authorized by Steven Holland, entered by Tori Hanson on 31.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Specimens described by Foerste, 1928.
Show authors, comments, and common names
Cephalopoda
 Pseudorthocerida - Spyroceratidae
Spyroceras porteri, Spyroceras baffinense
Spyroceras baffinense Schuchert 1900
 Endocerida - Endoceratidae
Endoceras baffinense
Endoceras baffinense Foerste 1928
 Multiceratoidea - Apsidoceratidae
Charactoceras schucherti
 Discosorida - Westonoceratidae
"? Westonoceras tumidum" = Westonoceras, "Thuleoceras ornatum" = Westonoceras
"? Westonoceras tumidum" = Westonoceras
"Thuleoceras ornatum" = Westonoceras
 Oncocerida - Oncoceratidae
Beloitoceras arcticum, ? Beloitoceras cornulum, ? Beloitoceras baffiniense
 Oncocerida - Diestoceratidae
Diestoceras schucherti
 Orthocerida - Proteoceratidae
Ephippiorthoceras compressum, Ephippiorthoceras baffinense
 Orthocerida - Kionoceratidae
Kionoceras scalariforme
 Actinocerida - Ormoceratidae
Ormoceras sp.
Ormoceras sp. Stokes 1840