Locality 8, Clarkston Mountains, Zone "B": Gasconadian, Utah
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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Bellefontia sp.
Walcott 1924
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Trilobita
- Ptychopariida
- Kingstoniidae
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Clelandia utahensis
Ross 1951
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Utah | County: | Box Elder |
| Coordinates: | 41.9° North, 112.1° West (view map) | ||||
| Paleocoordinates: | 7.0° South, 82.0° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Ordovician | Epoch: | Early/Lower Ordovician |
| Stage: | Tremadocian | 10 m.y. bin: | Ordovician 1 |
| Key time interval: | Gasconadian | Trilobite zone: | Bellefontia-Xenostegium |
| Age range of interval: | 485.40000 - 477.70000 m.y. ago |
Stratigraphy
| Formation: | Garden City | ||||
| Stratigraphy comments: Collection taken at 295 feet above base of formation |
Lithology and environment
| Primary lithology: | fine lithified "limestone" |
| Secondary lithology: | intraclastic lithified grainstone |
| Lithology description: Collection taken from base of interval described as: "Thin (3-inch to 1-foot) interbeds of light gray, aphanitic limestone, finely crystalline limestone, and intraformational conglomerate in crystalline matrix". | |
| Environment: | shallow subtidal indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection | ||
| Reason for describing collection: | biostratigraphic analysis | ||
| Museum repositories: | YPM | ||
| Collectors: | R. J. Ross, Jr. | Collection dates: | 1946-1947 |
Metadata
| Database number: | 103906 | ||
| Authorizer: | M. Hopkins | Enterer: | M. Hopkins |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2011-02-03 06:42:11 | Last modified: | 2012-08-25 21:27:43 |
| Access level: | the public | Released: | 2011-02-03 06:42:11 |
| 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] |