Chisholm Shale. Lincoln County, Nevada - Bell 1978: Solvan, Nevada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Echinodermata indet.
Klein 1754
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Edrioasteroidea
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Edrioasteroidea indet.
Billings 1858
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Sprinkle 1973 | ||||||
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Edrioasteroidea
- Edrioasterida
- Totiglobidae
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Totiglobus nimius n. gen., n. sp.
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Eocrinoidea
- Gogiida
- Eocrinidae
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Gogia longidactylus
(Walcott 1886)
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Gogia longidactylus
(Walcott 1886)
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Sprinkle 1973 | 111 specimens | |||||
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Inarticulata
- Inarticulata
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Inarticulata indet.
Huxley 1869
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Trilobita
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Trilobita indet.
Walch 1771
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Nevada | County: | Lincoln |
| Coordinates: | 37.9° North, 114.5° West (view map) | ||||
| Paleocoordinates: | 3.3° South, 93.1° West | ||||
| Geographic resolution: | local area |
Time
| Period: | Cambrian | ||
| 10 m.y. bin: | Cambrian 3 | ||
| *Period: | Middle Cambrian | *Epoch: | Early/Lower St. David's |
| *International age/stage: | Solvan | ||
| Key time interval: | Solvan | Zone: | Glossopleura |
| Age range of interval: | 510 - 504.5 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Chisholm Shale | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: All mine/pit excavations are from the same thin stratigraphic interval of approximately 9-11 meters below the contact between the Chisholm and the massive Highland Peak Formation at Chisholm Mine. The shale producing the fossils has very few "worm" burrows. | |||||
Lithology and environment
| Primary lithology: | red or brown,yellow lithified "shale" |
| Lithology description: 1.5-1.8 meters interval of pink, yellow, tan, brown, white, or red-banded, blocky or irregularly fissile, and silty with limonite joints shale. | |
Taphonomy
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | field collection |
| Collection size: | 900 specimens |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: All specimens are flattened which distort shape, morphology, and plate relationships. | |
| Taxonomic list comments:Taxonomic list includes inarticulate brachiopods, trilobites, and other echinoderms which were found in the horizon, but not described at the genus/species level. | |
Metadata
| Database number: | 7899 | ||
| Authorizer: | M. Patzkowsky, A. Lin | Enterer: | P. Borkow, A. Lin | Research group: | marine invertebrate |
| Created: | 2000-06-06 09:49:02 | Last modified: | 2001-08-30 17:52:51 |
| Access level: | the public | Released: | 2001-03-26 12:03:00 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 509. | B. M. Bell and J. Sprinkle. 1978. Totiglobus, an unusual new edrioasteroid from the Middle Cambrian of Nevada. Journal of Paleontology 52(2):243-266 [M. Patzkowsky/P. Borkow/J. Alroy] |
Secondary references:
| 22459 | J. Sprinkle. 1973. Morphology and evolution of blastozoan echinoderms. Harvard University Museum of Comparative Zoology, Special Publication 1-283 [G. Webster/G. Webster/P. Wagner] |