BH-95A-114: Cassinian, Canada
collected by W. D. Boyce 1976-

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Brachiopoda indet. Cuvier 1805
Cephalopoda
Cephalopoda indet. Cuvier 1797
Gastropoda
Gastropoda indet. Cuvier 1795
Ostracoda
Ostracoda indet. Latreille 1802
Trilobita - Proetida - Dimeropygidae
Ischyrotoma parallela n. sp. Boyce 1989
Trilobita - Proetida - Bathyuridae
Jeffersonia angustimarginata n. sp. Boyce 1989
synonym of Jeffersonia jenni
Bolbocephalus convexus (Billings 1865)
Petigurus nero (Billings 1865)
Catochia ornata Fortey 1979
Uromystrum affine (Poulsen 1937)
Bathyurellus affinis
Benthamaspis hintzei n. sp. Boyce 1989
synonym of Benthamaspis conica
Grinnellaspis newfoundlandensis Boyce 1989
Strigigenalis caudata (Billings 1865)
Trilobita - Asaphida - Asaphidae
Isoteloides peri Fortey 1979
see common names

Geography
Country:Canada State/province:Newfoundland and Labrador
Coordinates: 51.6° North, 56.0° West (view map)
Paleocoordinates:30.1° South, 45.4° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Ordovician Epoch:Early/Lower Ordovician
10 m.y. bin:Ordovician 1-2
Key time interval:Cassinian Trilobite zone: Strigigenalis caudata
Age range of interval:482.00000 - 470.00000 m.y. ago
Stratigraphy
Geological group:St. George Formation:Catoche
Local section:Boat Harbour composite Local bed:87.58-93.10 m
Local order:bottom to top
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology:massive,gray lithified lime mudstone
Secondary lithology: wackestone
Lithology description: "dark gray, light blue-gray and rubbly weathering, massive, moderately bioturbated; burrows, buff weathering, dolomitized, birdseye calcite and white, sparry calcite-lined fenestrae."
Environment:peritidal
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Collectors:W. D. Boyce Collection dates:1976-87
Collection method comments: Unit was collected at cm scale but trilobite occurrences reported as ranges within unit.
Metadata
Database number:106238
Authorizer:M. Hopkins Enterer:M. Hopkins
Modifier:J. Alroy Research group:marine invertebrate
Created:2011-03-04 12:16:17 Last modified:2012-10-28 01:16:56
Access level:the public Released:2011-03-04 12:16:17
Creative Commons license:CC BY
Reference information

Primary reference:
35403. 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]