BH-51 (Ordovician of Canada)

Where: Newfoundland and Labrador, Canada (51.6° N, 56.0° W: paleocoordinates 31.2° S, 47.7° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Strigigenalis brevicaudata trilobite zone, Barbace Cove Member (Boat Harbour Formation), Jeffersonian (485.4 - 470.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: peritidal; lithified reef rocks

• "Boundstone, stromatolitic, thrombolitic; circular mounds up to 25 cm in diameter and up to 8 cm in elevation above top of bed". Trilobites collected from mounds.

Size class: macrofossils

Collected by W. D. Boyce in 1976-87

Primary reference: W. D. Boyce. 1989. Early Ordovician trilobite faunas of the Boat Harbour and Catoche Formations (St. George Group) in the Boat-Harbour-Cape Norman area, Great Northern Peninsula, western Newfoundland. Geological Survey Branch, Department of Mines and Energy, Newfoundland and Labrador, Report 89-2 1-168 [M. Hopkins/M. Hopkins]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 106232: authorized by Melanie Hopkins, entered by Melanie Hopkins on 04.03.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

• Gastropods and coiled cephalopods seen in lime mudstones just below boundstone at top of bed.
Show authors, comments, and common names
Trilobita
 Proetida - Bathyuridae
"Jeffersonia angustimarginata" = Jeffersonia jenni, Bolbocephalus convexus, Strigigenalis brevicaudata, "Bolbocephalus stevensi" = Strigigenalis stevensi
"Jeffersonia angustimarginata" = Jeffersonia jenni Cullison 1944 trilobite
Bolbocephalus convexus Billings 1865 trilobite
Strigigenalis brevicaudata Boyce 1989 trilobite
"Bolbocephalus stevensi" = Strigigenalis stevensi Boyce 1989 trilobite