BH-19 (Ordovician of Canada)

Where: Newfoundland and Labrador, Canada (51.6° N, 56.0° W: paleocoordinates 32.5° S, 50.7° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Randaynia saundersi trilobite zone, Lower Member (Boat Harbour Formation), Demingian (485.4 - 478.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: peritidal; lithified, stromatolitic, gray reef rocks

• "stomatolitic, dark blue-gray, rubbly weathering, massive. Huge mounds, up to 300 cm in diameter and averaging 120 cm in thickness. Two mound horizons...upper mound interfill consists of lime mudstone, wackestone, packstone, and grainstone, well bioturbated in wide intermound areas, vuggy, and particularly fossiliferous."

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 106206: authorized by Melanie Hopkins, entered by Melanie Hopkins on 04.03.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
  -
Cephalopoda indet. Cuvier 1797
Gastropoda
  -
Gastropoda indet. Cuvier 1795 snail
planispiral
Trilobita
 Asaphida - Symphysurinidae
Randaynia saundersi Boyce 1989 trilobite
 Proetida - Hystricuridae
Hillyardina levis Boyce 1989 trilobite
Hystricurus deflectus Heller 1954 trilobite