USNM loc. 13237, Birch Creek area, Roberts Mountains: Ludlow, Nevada
collected by M. A. Murphy 1966
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Rhynchonellata
- Athyridida
- Athyrididae
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? Protathyris sp.
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Rhynchonellata
- Athyridida
- Nucleospiridae
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Nucleospira sp.
Hall 1859
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Rhynchonellata
- Orthida
- Hesperorthidae
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Ptychopleurella sp.
Schuchert and Cooper 1931
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Dolerorthis sp.
Schuchert and Cooper 1931
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Rhynchonellata
- Orthida
- Dicoelosiidae
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Dicoelosia sp.
King 1850
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| "long-lobed" | ||||||||||
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Rhynchonellata
- Orthida
- Dalmanellidae
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? Isorthis sp.
Kozlowski 1929
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Rhynchonellata
- Atrypida
- Septatrypidae
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Dubaria sp.
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| synonym of Septatrypa | ||||||||||
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Atrypella sp.
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| synonym of Atrypoidea | ||||||||||
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Rhynchonellata
- Atrypida
- Atrypinidae
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Gracianella plicumbra
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Gracianella lissumbra
Johnson and Boucot 1967
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Rhynchonellata
- Atrypida
- Atrypidae
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Atrypa sp.
Dalman 1828
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Rhynchonellata
- Spiriferida
- Cyrtiidae
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Hedeina aff. balchaschensis
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Rhynchonellata
- Spiriferida
- Reticulariidae
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? Alaskospira sp.
Kirk and Amsden 1952
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Rhynchonellata
- Rhynchonellida
- Machaerariidae
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Ferganella sp.
Nikiforova 1937
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Rhynchonellata
- Pentamerida
- Aenigmastrophiidae
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Aenigmastrophia cooperi
Boucot 1971
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Rhynchonellata
- Pentamerida
- Clorindidae
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Clorinda sp.
Barrande 1879
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Rhynchonellata
- Pentamerida
- Subrianidae
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Conchidium sp.
Oehlert 1887
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Conchidium aff. bilocularis
(Hisinger 1799)
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Severella aff. magnificaformis
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Rhynchonellata
- Pentamerida
- Pentameridae
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Pentamerifera sp.
Khodalevich 1939
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Rhynchonellata
- Pentamerida
- Gypidulidae
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Gypidula sp.
Hall 1867
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| "both smooth and plicate forms" | ||||||||||
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Strophomenata
- Orthotetida
- Chilidiopsidae
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aff. Gacella sp.
Williams 1962
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Nevada | County: | Eureka |
| Coordinates: | 39.9° North, 116.3° West (view map) | ||||
| Paleocoordinates: | 11.5° South, 66.0° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Altitude: | 6520 feet |
Time
| Period: | Silurian | Epoch: | Ludlow |
| 10 m.y. bin: | Silurian 2 | ||
| Key time interval: | Ludlow | ||
| Age range of interval: | 427.40000 - 423.00000 m.y. ago |
Stratigraphy
| Formation: | Roberts Mountains |
Lithology and environment
| Primary lithology: | "limestone" |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body,replaced with silica |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | USNM | ||
| Collectors: | M. A. Murphy | Collection dates: | 1966 |
Metadata
| Database number: | 204035 | ||
| Authorizer: | J. Marcot | Enterer: | J. Marcot |
| Modifier: | J. Marcot | Research group: | marine invertebrate |
| Created: | 2019-08-29 12:40:39 | Last modified: | 2022-09-12 12:34:11 |
| Access level: | the public | Released: | 2019-08-29 12:40:39 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 82579. | A. J. Boucot. 1971. Aenigmastrophia, new genus, a difficult Silurian brachiopod. In J. T. Dutro (ed.), Paleozoic Perspectives A Paleontological Tribute to G. Arthur Cooper 155-158 [J. Marcot/J. Marcot] |
Secondary references:
| 69873 | M. A. S. McMenamin. 2001. New trilobites from the Campito Formation of the White-Inyo Mountains. In M. A. S. McMenamin (ed.), Paleontology Sonora: Lipalian and Cambrian 114-116 [J. Marcot/J. Marcot] |