Silliman's Fossil Mount Pelecypods (Ordovician of Canada)

Where: Nunavut, Canada (63.7° N, 68.8° W: paleocoordinates 8.7° S, 37.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Richmondian (449.6 - 445.5 Ma)

Environment/lithology: dolomitic limestone and carbonaceous shale

• Environmental call by T. Hanson.
• "Throughout the Mount, the top 50 feet of these beds consists of massive dolomite 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

Preservation: mold/impression

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 24121: authorized by Steven Holland, entered by Tori Hanson on 31.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• From Troedsson 1928 and Roy 1941.
Show authors, comments, and common names
Bivalvia
 Solemyida - Ctenodontidae
Ctenodonta carpenderi, Ctenodonta sp., Ctenodonta cf. subnasuta
Ctenodonta sp. Salter 1852 clam
Ctenodonta cf. subnasuta Ulrich 1894 clam
 Modiomorphida - Modiomorphidae
Modiolodon sp., "Psiloconcha sp." = Cymatonota, Whiteavesia sp.
Modiolodon sp. Ulrich 1894 clam
"Psiloconcha sp." = Cymatonota Ulrich 1893 clam
Whiteavesia sp. Ulrich 1893 clam
 Cyrtodontida - Cyrtodontidae
"Whitella cf. truncata" = Cyrtodontula truncata, Cyrtodonta sp., Vanuxemia sp.
"Whitella cf. truncata" = Cyrtodontula truncata Ulrich 1890 clam
Cyrtodonta sp. Billings 1858 clam
Vanuxemia sp. Billings 1858 clam