AWi-14 Rep 4: Selandian, Alabama
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Arcida
- Cucullaeidae
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Cucullaea macrodonta
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1 specimen | |||||||||
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Bivalvia
- Carditida
- Carditidae
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Venericardia sp.
Lamarck 1801
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1 specimen | |||||||||
| Venericardia wilcoxensis sp. | ||||||||||
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Gastropoda
- Vasidae
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Sceptrum sp.
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1 specimen | |||||||||
| Sceptrum sp. A | ||||||||||
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Gastropoda
- Neogastropoda
- Ptychatractidae
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Exilia pergracilis
Conrad 1860
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1 specimen | |||||||||
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Gastropoda
- Neogastropoda
- Clavatulidae
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Surcula nasuta
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2 specimens | |||||||||
| synonym of Turricula | ||||||||||
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Gastropoda
- Neogastropoda
- Fasciolariidae
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Falsifusus harrisi
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1 specimen | |||||||||
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Gastropoda
- Neogastropoda
- Volutidae
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? Athleta sp.
Conrad 1853
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1 specimen | |||||||||
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Volutocorbis rugatus
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1 specimen | |||||||||
| spelled with current rank as Athleta (Volutocorbis) | ||||||||||
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Gastropoda
- Rostellariidae
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Calyptraphorus aldrichi
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1 specimen | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Alabama | County: | Wilcox |
| Coordinates: | 32.0° North, 87.4° West (view map) | ||||
| Paleocoordinates: | 34.7° North, 69.3° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Paleogene | Epoch: | Paleocene |
| Stage: | Selandian | 10 m.y. bin: | Cenozoic 1 |
| Key time interval: | Selandian | ||
| Age range of interval: | 61.60000 - 59.20000 m.y. ago |
Stratigraphy
| Geological group: | Midway | Formation: | Porters Creek | Member: | Matthews Landing Marl |
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Bulk 1 is 50m laterally from bulk 2, Bulk 4 is ~1.25m higher than Bulks 1&5 and ~7m laterally, Bulk 5 is 1m laterally from Bulk 1. | |||||
Lithology and environment
| Primary lithology: | micaceous,gray unlithified sandy,calcareous claystone |
| Includes fossils? | Y |
| Lithology description: light grey calcareous sandy micaceous clay | |
| Environment: | deep subtidal indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | mesofossils |
Collection methods and comments
| Collection methods: | bulk,sieve,field collection |
| Rock censused: | 106 g |
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: Gastropod shells were only counted if they contained the apex of the shell; bivalves shells were only counted if they contained the umbo. | |
Metadata
| Database number: | 86184 | ||
| Authorizer: | M. Patzkowsky | Enterer: | J. Sessa |
| Modifier: | J. Sessa | Research group: | GCP,marine invertebrate |
| Created: | 2009-01-26 08:19:32 | Last modified: | 2012-02-02 11:59:12 |
| Access level: | the public | Released: | 2009-01-26 08:19:32 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 28506. | J. A. Sessa, M. E. Patzkowsky, and T. J. Bralower. 2009. Impact of lithification on the diversity, size distribution, and recovery dynamics of marine invertebrate assemblages. Geology 37(2):115-118 [M. Patzkowsky/J. Sessa/J. Sessa] |
Secondary references:
| 29915 | J. A. Sessa, T. J. Bralower, M. E. Patzkowsky, J. C. Handley, and L. C. Ivany. 2012. Environmental and biological controls on the diversity and ecology of Late Cretaceous through early Paleogene marine ecosystems in the US Gulf Coastal Plain. Paleobiology 38(2):218-239 [M. Patzkowsky/J. Sessa/J. Sessa] |