Locality 1504 - Sobral Fm, Seymour Island: Danian, Antarctica
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia
- Cardiida
- Veneridae
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Marwickia woodburnei
Zinsmeister and Macellari 1988
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1 specimen | ||||||
see common names |
Geography
Country: | Antarctica |
Coordinates: | 64.3° South, 56.8° West (view map) |
Paleocoordinates: | 63.1° South, 66.7° West |
Basis of coordinate: | stated in text |
Geographic resolution: | outcrop |
Time
Period: | Paleogene | Epoch: | Paleocene |
Stage: | Danian | 10 m.y. bin: | Cenozoic 1 |
Key time interval: | Danian | ||
Age range of interval: | 66.00000 - 61.60000 m.y. ago |
Stratigraphy
Formation: | Sobral | ||||
Regional section: | Seymour Island | Regional bed: | 1132.44 m | ||
Regional order: | bottom to top | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From Sobral Formation, which unconformably overlues the Lopez de Bertodana Fm (Late Maastrichtian-Danian) and is overlain by the La Meseta Fm. THICKNESS: Section reachs 1600 m in thickness, presumably collection is from a horizon of bed-scale thickness. AGE: Early Danian. STRATIGRAPHIC POSITION: 1132.44 m |
Lithology and environment
Primary lithology: | gray poorly lithified silty sandstone |
Includes fossils? | Y |
Lithology description: SPECIFIC LITHOLOGY: Gray-tan, fine-grained, silty sandstone. LITHIFICATION: Poorly-lithified, on the basis of figured specimens. | |
Environment: | offshore |
Geology comments: ENVIRONMENT: Sandy, shallow-middle shelf, temperate coastal waters, normal salinity. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Preservation of anatomical detail: | good |
Articulated whole bodies: | many |
Collection methods and comments
Collection methods: | bulk,field collection |
Reason for describing collection: | taxonomic analysis |
Museum repositories: | USNM |
Collection method comments: COLLECTORS: Stilwell and Zinsmeister. REPOSITORY: Most all material is reposited in USNM collections. | |
Taxonomic list comments:COVERAGE: Exhaustive for bivalvia and gastropoda. NOMENCLATURE: Authoritative publication with consistent use of species and subgenus designations, and with biogeographic consideration. |
Metadata
Database number: | 67056 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy |
Modifier: | A. Hendy | Research group: | marine invertebrate |
Created: | 2006-11-05 01:13:37 | Last modified: | 2013-11-25 13:37:23 |
Access level: | group members | Released: | 2007-11-05 01:13:37 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
19080. | J. D. Stilwell, W. J. Zinsmeister, and A. E. Oleinik. 2004. Early Paleocene Mollusks of Antarctica: Systematics, Paleoecology and Paleobiogeographic Significance. Bulletins of American Paleontology 367 [A. Hendy/A. Hendy] |