Lichidae, Cape Phillips Fm., Gorstian part, ABR sects., Cornwallis Island: Gorstian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Trilobita
- Lichida
- Lichidae
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Borealarges reedi
Adrain 1994
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| see common names | |||||||
Geography
| Country: | Canada | State/province: | Nunavut |
| Coordinates: | 75.4° North, 95.8° West (view map) | ||
| Paleocoordinates: | 1.9° North, 31.1° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Silurian | Epoch: | Ludlow |
| Stage: | Gorstian | 10 m.y. bin: | Silurian 2 |
| Key time interval: | Gorstian | Zone: | progenitor |
| Age range of interval: | 427.40000 - 425.60000 m.y. ago |
Stratigraphy
| Formation: | Cape Phillips | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: Age calls by authors 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 |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 26001 | ||
| Authorizer: | M. Foote | Enterer: | M. Foote |
| Modifier: | M. Foote | Research group: | marine invertebrate |
| Created: | 2002-09-30 13:44:42 | Last modified: | 2006-09-15 15:15:11 |
| Access level: | the public | Released: | 2002-09-30 13:44:42 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 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] |