CN-1-16 (Ordovician of Canada)

Where: Newfoundland and Labrador, Canada (51.6° N, 55.9° W: paleocoordinates 30.1° S, 45.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Strigigenalis caudata trilobite zone, Catoche Formation (St. George Group), Cassinian (482.3 - 470.0 Ma)

Environment/lithology: peritidal; lithified lime mudstone and lithified wackestone

• "dark blue-gray, light blue-gray weathering, thin and rubbly bedded, bioturbated; spectacular pipes and patches of diagenetic dolostone-pseudobreccia [="primary dolostone that has been intensely, diagenetically dolomitized so that the original rock remains only as clots, streaks, and small masses surrounded by prismatic crystals and mosaics of white sparry dolomite"], white to light-gray weathering..."

Size class: macrofossils

Collected by W. D. Boyce in 1976-87

• Bottom 9 m of section collected at cm scale but trilobite occurrences reported as ranges.

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 106239: 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
Trilobita
 Corynexochida - Illaenidae
Illaenus sp.
Illaenus sp. Dalman 1827 trilobite
 Proetida - Bathyuridae
Strigigenalis caudata, Benthamaspis conica, Benthamaspis cf. conica, Bathyurellus abruptus, Uromystrum affine, Uromystrum cf. affine, Petigurus nero, Bolbocephalus convexus, Bolbocephalus kindlei n. sp., Jeffersonia timon, "Jeffersonia angustimarginata" = Jeffersonia jenni, Catochia ornata
Strigigenalis caudata Billings 1865 trilobite
Benthamaspis conica Fortey 1979 trilobite
Benthamaspis cf. conica Fortey 1979 trilobite
Bathyurellus abruptus Billings 1865 trilobite
Uromystrum affine Poulsen 1937 trilobite
Uromystrum cf. affine Poulsen 1937 trilobite
Petigurus nero Billings 1865 trilobite
Bolbocephalus convexus Billings 1865 trilobite
Bolbocephalus kindlei n. sp. Boyce 1989 trilobite
Jeffersonia timon Billings 1865 trilobite
"Jeffersonia angustimarginata" = Jeffersonia jenni Cullison 1944 trilobite
Catochia ornata Fortey 1979 trilobite
 Proetida - Dimeropygidae
Ischyrotoma anataphra, Ischyrotoma parallela
Ischyrotoma anataphra Fortey 1979 trilobite
Ischyrotoma parallela Boyce 1989 trilobite