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
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Borealarges reedi n. sp.
Adrain 1994
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Adrain and Ramskold 1996 | |||||||||
Borealarges calei n. sp.
Adrain 1994
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Adrain and Ramskold 1996 | |||||||||
B. (s.l.) | ||||||||||
Borealarges yulei n. sp.
Adrain 2003
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Dicranogmus wynni n. sp.
Adrain 2003
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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] |