Locality 5, Hillyard's Canyon, Zone "H", lower: Blackhillsian, Idaho
collected by R. J. Ross, Jr. 1946-1947
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Trilobita
- Asaphida
- Asaphidae
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Trigonocerca typica
Ross 1951
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Idaho | County: | Franklin |
| Coordinates: | 42.1° North, 111.6° West (view map) | ||||
| Paleocoordinates: | 7.9° South, 79.5° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Ordovician | Epoch: | Early/Lower Ordovician |
| Stage: | Floian | 10 m.y. bin: | Ordovician 2 |
| Key time interval: | Blackhillsian | Trilobite zone: | Trigonocerca typica |
| Age range of interval: | 473.90000 - 470.00000 m.y. ago |
Stratigraphy
| Formation: | Garden City | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: 15 foot interval beginning 946 feet above base of formation. Occurs in uppermost part of Lower Member. Lowermost collection from biozone "H" at this locality. | |||||
Lithology and environment
| Primary lithology: | lithified "limestone" |
| Secondary lithology: | intraclastic lithified grainstone |
| Lithology description: "Interbedded crystalline limestone and intraformational conglomerate in a crystalline matrix." | |
| Environment: | shallow subtidal indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis | ||
| Museum repositories: | YPM | ||
| Collectors: | R. J. Ross, Jr. | Collection dates: | 1946-1947 |
Metadata
| Database number: | 103798 | ||
| Authorizer: | M. Hopkins | Enterer: | M. Hopkins |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2011-02-02 09:04:44 | Last modified: | 2012-08-25 21:19:57 |
| Access level: | the public | Released: | 2011-02-02 09:04:44 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 25414. | R. J., J.r. Ross. 1951. Stratigraphy of the Garden City Formation in northeastern Utah, and its trilobite faunas. Yale Peabody Museum of Natural History Bulletin 6:1-161 [S. Finnegan/S. Finnegan/P. Wagner] |