Shaw collection N-3 (Ordovician of Canada)

Where: Quebec, Canada (50.2° N, 63.7° W: paleocoordinates 27.2° S, 46.9° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Bathyurus granulosus/Ceraurinella nahanniensis trilobite zone, upper Member (Mingan Formation), Whiterockian (471.8 - 457.5 Ma)

• Bathyurus granulosus (nearshore biofacies) and Ceraurinella nahanniensis (open shelf biofacies) biozones are partially concurrent (Tremblay and Westrop 1991).

Environment/lithology: lithified grainstone

• "Offshore bar-tidal delta". See also Shaw 1980.

Size class: macrofossils

Collected by F. C. Shaw in the 1960s-70s; reposited in the GSC

• "Field work for the present report was undertaken in 1966, 1971, and 1972 by F. C. Shaw and in 1978 by T. E. Bolton, M. J. Copeland, and G. S. Nowlan. Additional material was supplied by A. A. Petryk, A. Desrochers, and S. Desbiens."

Primary reference: F. C. Shaw and T. E. Bolton. 2011. Ordovician trilobites from the Romaine and Mingan Formations (Ibexian-Late Whiterockian), Mingan Islands, Quebec. Journal of Paleontology 85(3):406-441 [M. Hopkins/M. Hopkins]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 111363: authorized by Melanie Hopkins, entered by Melanie Hopkins on 23.06.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

• Abundance data reported to genus level only (Table 1)
Trilobita
 Harpetida - Harpetidae
Hibbertia valcourensis Shaw 1968 trilobite
Dolichoharpes sp. Whittington 1949 trilobite
 Lichida - Lichidae
Amphilichas minganensis Billings 1865 trilobite
 Asaphida - Asaphidae
Vogdesia obtusus Hall 1847 trilobite
Isotelus harrisi Raymond 1905 trilobite
 Asaphida - Remopleurididae
Eorobergia marginalis Raymond 1925 trilobite
Remopleurides canadensis Billings 1865 trilobite
 Corynexochida - Illaenidae
Thaleops conifrons Billings 1859 trilobite
Thaleops vindex Billings 1865 trilobite
Thaleops raymondi Shaw 1968 trilobite
Illaenus bayfieldi Billings 1859 trilobite
 Proetida - Bathyuridae
Uromystrum minor Raymond 1905 trilobite
 Proetida - Telephinidae
Phorocephala setoni Shaw 1968 trilobite
 Phacopida - Encrinuridae
Cybeloides cf. prima Narraway and Raymond 1906 trilobite
Encrinuroides sp. Reed 1931 trilobite
 Phacopida - Pliomeridae
Pliomerops canadensis Billings 1859 trilobite
 Phacopida - Cheiruridae
Ceraurinella pompilia Billings 1865 trilobite
Sphaerocoryphe sp. Angelin 1854 trilobite
Sphaerexochus parvus Billings 1865 trilobite
 Phacopida - Pterygometopidae
Calyptaulax annulata Raymond 1905 trilobite