PSst-1-RS (27-30 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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3 specimens | ||||||
| recombined as Epitonium georgettinum | |||||||
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Gastropoda
- Neotaenioglossa
- Calyptraeidae
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Crepidula (Crepidula) protea
d'Orbigny 1941
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Crepidula (Bostrycapulus) aculeata
(Gmelin 1791)
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4 specimens | ||||||
| recombined as Bostrycapulus aculeatus | |||||||
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Gastropoda
- Planaxidae
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Fossarus florius
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24 specimens | ||||||
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Gastropoda
- Naticidae
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Natica (Natica) isabelleana
(d'Orbigny 1840)
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1 specimen | ||||||
| recombined as Notocochlis isabelleana | |||||||
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Gastropoda
- Neogastropoda
- Olividae
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Olivella (Olivina) tehuelchana
(d'Orbigny 1841)
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17 specimens | ||||||
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Olivancillaria deshayesiana
(Ducros 1857)
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1 specimen | ||||||
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Gastropoda
- Neogastropoda
- Columbellidae
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Anachis (Costoanachis) obesa
(Adams 1845)
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8 specimens | ||||||
| recombined as Parvanachis obesa | |||||||
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Anachis (Costoanachis) avara
(Say 1822)
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37 specimens | ||||||
| Colombella avara | |||||||
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Gastropoda
- Heterostropha
- Pyramidellidae
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Turbonilla cf. atypha
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9 specimens | ||||||
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Odostomia (Chrysallida) seminuda
(Adams 1839)
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7 specimens | ||||||
| recombined as Boonea seminuda | |||||||
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Gastropoda
- Tegulidae
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Tegula (Agathistoma) informal sp. A
()
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2 specimens | ||||||
| original and current combination Agathistoma | |||||||
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Tegula patagonica
(d'Orbigny 1835)
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3 specimens | ||||||
| recombined as Agathistoma patagonicum | |||||||
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Gastropoda
- Liotiidae
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Didianema duplinensis
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3 specimens | ||||||
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Bivalvia
- Cardiida
- Veneridae
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Amiantis (Amiantis) purpurata
(Lamarck 1818)
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2 specimens | ||||||
| recombined as Amiantis purpurata | |||||||
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Pitar (Pitar) rostratum
(Koch 1943)
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1 specimen | ||||||
| recombined as Pitar rostratus | |||||||
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Clausinella gayi
(Húpe 1854)
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2 specimens | ||||||
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Bivalvia
- Cardiida
- Mactridae
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Mactra (Mactra) patagonica
(d'Orbigny 1846)
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| original and current combination Mactra patagonica | |||||||
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Mactra (Mactra) marplatensis
(Doello-Jurado 1918)
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8 specimens | ||||||
| original and current combination Mactra marplatensis | |||||||
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Bivalvia
- Carditida
- Crassatellidae
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Crassinella maldonadoensis
(Pilsbry 1897)
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2 specimens | ||||||
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Bivalvia
- Pectinida
- Pectinidae
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Pecten (Chlamys) tehuelchus
(d'Orbigny 1842)
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1 specimen | ||||||
| recombined as Aequipecten tehuelchus | |||||||
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea (Ostrea) puelchana
(d'Orbigny 1842)
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1 specimen | ||||||
| recombined as Ostrea (Eostrea) puelchana | |||||||
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Bivalvia
- Arcida
- Arcidae
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Anadara (Lunarca) ovalis
(Bruguiere 1789)
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52 specimens | ||||||
| recombined as Lunarca ovalis | |||||||
| see common names | |||||||
Geography
| Country: | Brazil |
| Coordinates: | 30.2° South, 50.5° West (view map) |
| Paleocoordinates: | 30.2° South, 50.5° 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: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: Unknown lithostratigraphic unit. THICKNESS: From drill hole of at least 45 m thick, from 3 m thick unit. AGE: Holocene, based of faunal similarity with Uruguan and Argentinian Holocene assemblages. STRATIGRAPHIC POSITION: From 27-30 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: | 72117 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2007-05-25 07:43:38 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | authorizer only | Released: | 2008-05-25 07:43:38 |
| 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] |