USNM loc. 13257, Roberts Creek Mountain, Roberts Mountains: Ludlow, Nevada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Rhynchonellata
- Pentamerida
- Aenigmastrophiidae
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Aenigmastrophia cooperi n. gen., n. sp.
Boucot 1971
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Rhynchonellata
- Pentamerida
- Subrianidae
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Cymbidium sp.
Kirk 1926
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| "coarsely plicate and finely plicate forms" | ||||||||||
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Rhynchonellata
- Pentamerida
- Pentameridae
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Kirkidium sp.
Amsden et al. 1967
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| "both small fine-ribbed and large fine-ribbed" | ||||||||||
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Rhynchonellata
- Pentamerida
- Gypidulidae
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Gypidula sp.
Hall 1867
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Rhynchonellata
- Spiriferida
- Delthyrididae
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? Howellella sp.
Kozlowski 1946
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Rhynchonellata
- Spiriferida
- Reticulariidae
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Alaskospira sp.
Kirk and Amsden 1952
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Rhynchonellata
- Atrypida
- Atrypidae
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Atrypa sp.
Dalman 1828
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Rhynchonellata
- Atrypida
- Atrypinidae
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Spirigerina cf. marginalis
(Dalman 1828)
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Gracianella crista
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Rhynchonellata
- Atrypida
- Septatrypidae
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Atrypella sp.
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| synonym of Atrypoidea | ||||||||||
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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
- Rhipidomellidae
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Dalejina sp.
Havlicek 1953
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Rhynchonellata
- Orthida
- Dalmanellidae
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Isorthis sp.
Kozlowski 1929
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unclassified
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Strophomenoidea indet.
(Opik 1934)
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| "orthotetacid brachiopod" | ||||||||||
| 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, 66.1° West | ||||
| Basis of coordinate: | estimated from map |
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 |
Metadata
| Database number: | 227120 | ||
| Authorizer: | J. Marcot | Enterer: | J. Marcot | Research group: | marine invertebrate |
| Created: | 2022-09-12 12:42:13 | Last modified: | 2022-09-12 12:42:13 |
| Access level: | the public | Released: | 2022-09-12 12:42:13 |
| 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] |