Lake Carmel pit, 9.0-10.0 m [Michoud Fm]: Holocene, Louisiana
collected by Mollyn
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
unclassified
|
||||||||||
|
Cryrtopleura costata
|
R category | |||||||||
|
Gastropoda
- Heterostropha
- Pyramidellidae
|
||||||||||
|
Turbonilla interrupta
(Totten 1835)
|
R category | |||||||||
|
Gastropoda
- Neogastropoda
- Nassariidae
|
||||||||||
|
Nassarius acutus
(Say 1822)
|
U category | |||||||||
| recombined as Nassarius (Nassarius) acutus | ||||||||||
|
Gastropoda
- Neogastropoda
- Columbellidae
|
||||||||||
|
Anachis semiplicata
Stearns 1873
|
R category | |||||||||
| recombined as Costoanachis semiplicata | ||||||||||
|
Gastropoda
- Littorinidae
|
||||||||||
|
Littorina irrorata
(Say 1822)
|
R category | |||||||||
| recombined as Littoraria irrorata | ||||||||||
|
Gastropoda
- Naticidae
|
||||||||||
|
Neverita duplicatus
(Say 1822)
|
U category | |||||||||
|
Gastropoda
- Opisthobranchia
- Cylichnidae
|
||||||||||
|
Acteocina canaliculata
(Say 1826)
|
R category | |||||||||
|
Bivalvia
- Cardiida
- Tellinidae
|
||||||||||
|
Tellina texana
Dall 1900
|
R category | |||||||||
| recombined as Angulus texanus | ||||||||||
|
Macoma tenta
(Say 1834)
|
R category | |||||||||
|
Bivalvia
- Cardiida
- Veneridae
|
||||||||||
|
Mercenaria campechiensis
(Gmelin 1791)
|
U category | |||||||||
|
Agriopoma texasiana
(Dall 1892)
|
U category | |||||||||
| recombined as Callocardia (Agriopoma) texasiana | ||||||||||
|
Bivalvia
- Cardiida
- Mactridae
|
||||||||||
|
Rangia cuneata
(Sowerby 1831)
|
R category | |||||||||
|
Bivalvia
- Pholadida
- Corbulidae
|
||||||||||
|
Corbula contracta
Say 1822
|
A category | |||||||||
| recombined as Caryocorbula contracta | ||||||||||
|
Bivalvia
- Arcida
- Arcidae
|
||||||||||
|
Anadara ovalis
(Bruguiere 1789)
|
R category | |||||||||
| recombined as Lunarca ovalis | ||||||||||
|
Bivalvia
- Ostreida
- Ostreidae
|
||||||||||
|
Crassostrea virginica
(Gmelin 1791)
|
U category | |||||||||
|
Bivalvia
- Mytilida
- Mytilidae
|
||||||||||
|
Geukensia demissa
(Dilwyn 1817)
|
R category | |||||||||
| SUBSPECIES: Geukensia demissa granosissima | ||||||||||
|
Brachidontes exustus
(Linnaeus 1758)
|
R category | |||||||||
|
Bivalvia
- Nuculanida
- Nuculanidae
|
||||||||||
|
Nuculana concentrica
(Say 1824)
|
R category | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Louisiana | County: | Orleans |
| Coordinates: | 30.1° North, 90.0° West (view map) | ||||
| Paleocoordinates: | 30.1° North, 90.0° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Quaternary | Epoch: | Holocene |
| 10 m.y. bin: | Cenozoic 6 | ||
| Key time interval: | Holocene | ||
| Age range of interval: | 0.01170 - 0.00000 m.y. ago |
Stratigraphy
| Formation: | Michoud | ||||
| Local section: | Lake Carmel pit | Local bed: | 9.5 m | ||
| Local order: | top to bottom | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Michoud Fm, which overlie unnamed equivalents of the Little Woods paleosol and Deweyville Fm (Pleistocene), and is overlain by the New Orleans barrier trend. AGE: Holocene. STRATIGRAPHIC POSITION: From 9-10 m in section. | |||||
Lithology and environment
| Primary lithology: | unlithified silty claystone |
| Secondary lithology: | unlithified argillaceous siltstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Silty clay to clayey silt, with occasional flat sand lenses. LITHIFICATION: Unlithified. | |
| Environment: | coastal indet. |
| Geology comments: ENVIRONMENT: Lower Bay-Sound. | |
Taphonomy
| Modes of preservation: | body,original aragonite |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some genera,some macrofossils |
| Collection methods: | surface (in situ),field collection |
| Reason for describing collection: | taxonomic analysis |
| Collectors: | Mollyn |
| Collection method comments: COLLECTOR: G. Mollyn. REPOSITORY: Unknown. | |
| Taxonomic list comments:COVERAGE: Exhaustive for gastropoda, bivalvia and scaphopoda. NOMENCLATURE: Not an authoritative publication, but with modern nomenclature and species-resolution identifications. | |
Metadata
| Database number: | 92772 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2009-11-28 11:51:16 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2009-11-28 11:51:15 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 31288. | W. Miller III. 1983. Stratigraphy of newly exposed Quaternary sediments, eastern Orleans Parish, Louisiana. Tulane Studies in Geology and Paleontology 17(3-4):85-104 [A. Hendy/A. Hendy] |