Philipsburg, Naylor Ledge (Ordovician of Canada)

Where: Quebec, Canada (45.0° N, 73.1° W: paleocoordinates 30.1° S, 61.1° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Oepikodus communis conodont zone, Naylor Ledge Formation, Floian (477.7 - 470.0 Ma)

• Naylor Ledge Formation is early Floian after Kröger & Landing, 2009

Environment/lithology: shallow subtidal; limestone

Size class: macrofossils

Preservation: cast, original aragonite, original calcite, replaced with calcite

Reposited in the GSC, USNM

Primary reference: E. O. Ulrich, A. F. Foerste, A. K. Miller and W. M. Furnish. 1942. Ozarkian and Canadian cephalopods, Part I: Nautilicones. Geological Society of America Special Papers 37:1-157 [B. Kröger/B. Kröger/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 98439: authorized by Björn Kröger, entered by Björn Kröger on 06.10.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ellesmerocerida - Protocycloceratidae
Protocycloceras catulus1 Billings 1865
 Tarphycerida - Estonioceratidae
 Tarphycerida - Tarphyceratidae
Centrotarphyceras apheusi Ulrich et al. 1942
 Tarphycerida - Trocholitidae
Wichitoceras naylorense Ulrich et al. 1942
Arkoceras sp. Ulrich et al. 1942
 Endocerida - Endoceratidae
Endoceras aristides1 Billings 1865
 Endocerida - Proterocameroceratidae
Kirkoceras missisquoi2 Billings 1865
 Dissidocerida - Rangeroceratidae
"Protocycloceras repens" = Anrangeroceras repens1
"Protocycloceras repens" = Anrangeroceras repens1 Billings 1856