BH-28 (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, bioturbated, dolomitic lime mudstone and wackestone

• "thin and irregularly bedded; thin, irregular, buff dolomitic laminae; moderately bioturbated. Base and top of bed undulose."

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 106215: authorized by Melanie Hopkins, entered by Melanie Hopkins on 04.03.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Echinodermata indet.
Rhynchonellata
 Pentamerida - Clarkellidae
Diaphelasma sp.
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
planispiral, high-spired
Trilobita
 Proetida - Hystricuridae
Hillyardina levis, Hystricurus oculilunatus, Parahystricurus smithiae
Hillyardina levis Boyce 1989 trilobite
Hystricurus oculilunatus Ross 1951 trilobite
Parahystricurus smithiae Boyce 1989 trilobite