Lichidae, Cape Phillips Fm., Homerian part, ABR sections, Cornwallis Island: Homerian, Canada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita - Lichida - Lichidae
Borealarges reedi n. sp. Adrain 1994
Adrain and Ramskold 1996
Borealarges calei n. sp. Adrain 1994
Adrain and Ramskold 1996
B. (s.l.)
Borealarges yulei n. sp. Adrain 2003
Dicranogmus wynni n. sp. Adrain 2003
see common names

Geography
Country:Canada State/province:Nunavut
Coordinates: 75.4° North, 95.8° West (view map)
Paleocoordinates:2.5° North, 31.9° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Silurian Epoch:Wenlock
Stage:Homerian 10 m.y. bin:Silurian 2
Key time interval:Homerian Zone: ludensis
Age range of interval:430.50000 - 427.40000 m.y. ago
Stratigraphy
Formation:Cape Phillips
Stratigraphic resolution:formation
Stratigraphy comments: Age calls by author based on interfingering beds with rich graptolite fauna (see PBDB ref. 7197).
Lithology and environment
Primary lithology: packstone
Secondary lithology: wackestone
Lithology description: Cape Phillips Formation in general "comprised mainly of calcareous shales and argillaceous limestones." The trilobites are said occur in packstones and wackestones that are interpreted as debris flows (PBDB ref. 7197).
Environment:slope Tectonic setting:passive margin
Geology comments: See lithology.
SEP environmental call based on given info and regional context
Taphonomy
Modes of preservation:replaced with silica
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection excludes:some macrofossils
Reason for describing collection:taxonomic analysis
Metadata
Database number:25996
Authorizer:M. Foote, M. Hopkins Enterer:M. Foote, M. Hopkins
Modifier:M. Hopkins Research group:marine invertebrate
Created:2002-09-30 12:06:52 Last modified:2023-02-06 11:06:32
Access level:the public Released:2002-09-30 12:06:52
Creative Commons license:CC BY
Reference information

Primary reference:

63044. J. M. Adrain. 2003. Validity and composition of the Silurian trilobite genera Borealarges and Dicranogmus, with new species from the Canadian Arctic. Canadian Journal of Earth Sciences 40:749-763 [M. Hopkins/M. Hopkins]

Secondary references:

7199 J. M. Adrain and L. Ramskold. 1996. The lichid trilobite Radiolichas in the Silurian of Arctic Canada and Gotland, Sweden. Geological Magazine 133:147-158 [M. Foote/M. Foote/M. Foote]