Locality 1431 - Sobral Fm, Seymour Island: Danian, Antarctica
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Vanikoridae
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Vanikoropsis arktowskiana
(Wilckens 1910)
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1 specimen | ||||||
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Gastropoda
- Ranellidae
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Antarctiranella tessela n. gen., n. sp.
Stilwell et al. 2004
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1 specimen | ||||||
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Gastropoda
- Aporrhaidae
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Struthiochenopus hurleyi n. sp.
Stilwell et al. 2004
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2 specimens | ||||||
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Gastropoda
- Neogastropoda
- Volutidae
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Zygomelon apheles n. sp.
Stilwell et al. 2004
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1 specimen | ||||||
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Gastropoda
- Neogastropoda
- Melongenidae
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Serrifusus binodosum n. sp.
Stilwell et al. 2004
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2 specimens | ||||||
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Gastropoda
- Neogastropoda
- Buccinidae
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Colus delrioae n. sp.
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1 specimen | ||||||
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Seymourosphaera bulloides
Oleinik and Zinsmeister 1996
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2 specimens | ||||||
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Gastropoda
- Neogastropoda
- Fasciolariidae
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Taioma sobrali n. sp.
Stilwell et al. 2004
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1 specimen | ||||||
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Gastropoda
- Neogastropoda
- Conidae
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Marshallaria variegata n. sp.
Stilwell et al. 2004
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1 specimen | ||||||
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Bivalvia
- Nuculida
- Nuculidae
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Nucula (Leionucula) suboblonga
(Wilckens 1907)
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1 specimen | ||||||
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Bivalvia
- Arcida
- Cucullaeidae
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Cucullaea ellioti
Zinsmeister and Macellari 1988
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3 specimens | ||||||
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Bivalvia
- Cardiida
- Lahillidae
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Lahillia larseni
(Sharman and Newton 1897)
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1 specimen | ||||||
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Crinoidea
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Crinoidea indet.
Miller 1821
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specimens | ||||||
| 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: | 1144.26 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: 1144.26 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: | 67044 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2006-11-05 01:07:57 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | group members | Released: | 2006-11-05 01:07:54 |
| 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] |