Cist-1-RS (30-36 m) - Rio Grande do Sul: Holocene, Brazil
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Epitoniidae
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Epitonium (Epitonium) georgettina
(Kiener 1838)
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1 specimen | ||||||
| recombined as Epitonium georgettinum | |||||||
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Gastropoda
- Naticidae
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Tectonatica pusilla
(Say 1822)
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1 specimen | ||||||
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Gastropoda
- Neogastropoda
- Olividae
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Olivella (Olivina) tehuelchana
(d'Orbigny 1841)
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1 specimen | ||||||
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Gastropoda
- Neogastropoda
- Columbellidae
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Anachis (Anachis) catenata
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1 specimen | ||||||
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Anachis cf. isabellei
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7 specimens | ||||||
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Anachis (Costoanachis) avara
(Say 1822)
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2 specimens | ||||||
| Colombella avara | |||||||
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Gastropoda
- Hydrobiidae
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Littoridina australis
(d'Orbigny 1837)
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2 specimens | ||||||
| recombined as Heleobia australis | |||||||
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Gastropoda
- Heterostropha
- Pyramidellidae
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Turbonilla cf. atypha
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1 specimen | ||||||
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Turbonilla (Pyrgiscus) interrupta
(Totten 1835)
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1 specimen | ||||||
| recombined as Turbonilla interrupta | |||||||
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Bivalvia
- Cardiida
- Donacidae
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Donax hanleyanus
Philippi 1845
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1 specimen | ||||||
| synonym of Donax hilairea | |||||||
| see common names | |||||||
Geography
| Country: | Brazil |
| Coordinates: | 32.2° South, 52.2° West (view map) |
| Paleocoordinates: | 32.2° South, 52.2° West |
| Basis of coordinate: | stated in text |
| Geographic resolution: | small collection |
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
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: Unknown lithostratigraphic unit. THICKNESS: From drill hole of at least 231 m thick, from 6 m thick unit. AGE: Holocene, based of faunal similarity with Uruguan and Argentinian Holocene assemblages. STRATIGRAPHIC POSITION: From 30-36 m in drill hole. | |||||
Lithology and environment
| Primary lithology: | unlithified "siliciclastic" |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Unknown lithology, presumably from unlithified siliciclastic facies. LITHIFICATION: Presumably unlithified given age and figured specimens. | |
| Environment: | coastal indet. |
| Geology comments: ENVIRONMENT: Shallow siliciclastic marine environment. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | core,field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: COLLECTOR: Petrobas Petroleum Company. REPOSITORY: Unknown repository, possibly the School of Geology, National Science Institute, Brazil. | |
| Taxonomic list comments:COVERAGE: Exhaustive for gastropoda and bivalvia. Other groups not discussed. NOMENCLATURE: Authoritative publication with subgenus and species level designations, but nevertheless somewhat antiquated. | |
Metadata
| Database number: | 72126 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2007-05-25 07:51:08 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | authorizer only | Released: | 2008-05-25 07:51:08 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 24412. | I. R. da Silva Forti. 1969. Cenozoic Mollusks from the drillholes Cassino and Palmares do Sul of the Coastal Plain of Rio Grande do Sul. Iheringia Geologia 2:55-155 [A. Hendy/A. Hendy/P. Wagner] |