Perdue Hill [Suwannee Fm]: Early Oligocene, Alabama
collected by Aldrich
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Malacostraca
- Decapoda
- Portunidae
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Echinoidea
- Arbacioida
- Arbaciidae
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| Clark and Twitchell 1915 | |||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Alabama | County: | Monroe |
| Coordinates: | 31.5° North, 87.5° West (view map) | ||||
| Paleocoordinates: | 35.0° North, 74.4° West (Wright 2013) |
Time
| Period: | Paleogene | Epoch: | Oligocene |
| Stage: | Rupelian | 10 m.y. bin: | Cenozoic 4 |
| Key time interval: | Early Oligocene | ||
| Age range of interval: | 33.9 - 27.3 m.y. ago |
Stratigraphy
| Geological group: | Vicksburg | Formation: | Byram Marl |
Lithology and environment
| Primary lithology: | marl |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | surface (float),surface (in situ),survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | USNM |
| Collectors: | Aldrich |
| Collection method comments: COLLECTOR: T.H. Aldrich. REPOSITORY: USNM (formerly reposited at Johns Hopkins University). | |
| Taxonomic list comments:COVERAGE: Includes echinoids and decapods (a left manus); molluscs probably also present. NOMENCLATURE: Authoritative publications with species-resolution identifications, but with antiquated nomenclature. | |
Metadata
| Database number: | 143392 | ||
| Authorizer: | C. Schweitzer, A. Hendy | Enterer: | S. Yost, A. Hendy |
| Modifier: | A. Hendy | Research group: | decapod |
| Created: | 2013-04-23 03:38:12 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | authorizer only | Released: | 2018-04-23 03:38:12 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 45555. | decapod,fossil record | M. J. Rathbun. 1935. Fossil Crustacea of the Atlantic and Gulf Coastal Plain. Geological Society of America Special Paper (2)1-160 [C. Schweitzer/S. Yost] |
Secondary references:
| 16640 | W. B. Clark and M. W. Twitchell. 1915. The Mesozoic and Cenozoic Echinodermata of the United States. United States Geological Survey Bulletin 54:1-341 [L. Villier/J. Millet/M. Uhen] | |
| 32912 | C. W. Cooke. 1959. Cenozoic echinoids of eastern United States. United States Geological Survey Professional Papers 321:1-106 [L. Villier/L. Villier/M. Hopkins] |