Locality 13, Round Hill, Dictyonema beds: Canadian, Utah
collected by R. J. Ross, Jr. 1946-1947
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Pterobranchia
- Dendroidea
- Acanthograptidae
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Dictyonema sp.
Hall 1851
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Trilobita
- Asaphida
- Asaphidae
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Kirkella sp.
Kobayashi 1942
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| see common names |
| Country: | United States |
State/province: | Utah |
County: | Box Elder |
| Coordinates: |
41.5° North, 111.9° West (view map) |
| Paleocoordinates: | 24.2° North, 113.6° West (Wright 2013) |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | local area |
| Period: | Ordovician |
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10 m.y. bin: | Ordovician 1-4 |
| Key time interval: | Canadian |
| Age range of interval: | 485.4 - 457 m.y. ago |
| Formation: | Garden City |
| Stratigraphic resolution: | group of beds |
| Stratigraphy comments: 86 foot interval beginning at 508 feet above base of formation |
| Primary lithology: | fine lithified "limestone" |
| Secondary lithology: | lithified conglomerate |
| Lithology description: "Low ledges of aphanitic limestone, crystalline limestone, intraformational conglomerate, protruding through float and soil mantle." |
| Environment: | shallow subtidal indet. |
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Museum repositories: | YPM |
| Collectors: | R. J. Ross, Jr. |
Collection dates: | 1946-1947 |
| Taxonomic list comments:Description in measured section states that this interval contained a "complete trilobite assemblage from Zone 'J'" (p. 23). Taxonomic list taken from faunal list on p. 27-28. |
| Database number: | 103918 |
| Authorizer: | M. Hopkins |
Enterer: | M. Hopkins |
| Research group: | marine invertebrate |
| Created: | 2011-02-03 08:04:23 |
Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public |
Released: | 2011-02-03 08:04:23 |
| Creative Commons license: | CC0 |
| 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] |