Cerro Azul CA 36: Danian, Argentina
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Ostracoda
- Podocopida
- Pontocyprididae
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Argilloecia abnormalis
Ceolin et al. 2015
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17 specimens | ||||||
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Ostracoda
- Podocopida
- Candonidae
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? Paracypris sp.
Sars 1866
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1 specimen | ||||||
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Paracypris imaguncula
Ceolin et al. 2015
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2 specimens | ||||||
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Ostracoda
- Podocopida
- Bythocytheridae
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Bythoceratina cheleutos
Ceolin et al. 2015
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1 specimen | ||||||
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Ostracoda
- Podocopida
- Trachyleberididae
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Togoina australis
Bertels 1968
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32 specimens | ||||||
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Huantraiconella prima
Bertels 1968
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74 specimens | ||||||
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Actinocythereis biposterospinata
Bertels 1973
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15 specimens | ||||||
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Actinocythereis indigena
Bertels 1969
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36 specimens | ||||||
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Neoveenia argentinensis
Bertels 1969
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58 specimens | ||||||
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Orthrocosta atopos
Ceolin et al. 2015
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1 specimen | ||||||
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Henryhowella (Wichmannella) meridionalis
(Bertels 1969)
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12 specimens | ||||||
| original and current combination Wichmannella meridionalis | |||||||
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Hysterocythereis diversotuberculatus
Ceolin et al. 2015
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1 specimen | ||||||
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Ostracoda
- Podocopida
- Loxoconchidae
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Palmoconcha similis
Bertels 1973
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53 specimens | ||||||
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Loxoconcha posterocosta
Ceolin et al. 2015
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22 specimens | ||||||
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Ostracoda
- Podocopida
- Cytheruridae
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Cytheropteron hyperdictyon
Ceolin et al. 2015
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5 specimens | ||||||
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Ostracoda
- Podocopida
- Pectocytheridae
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Keijia circulodictyon
Ceolin et al. 2015
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40 specimens | ||||||
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Keijia kratistos
Ceolin et al. 2015
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29 specimens | ||||||
| see common names | |||||||
Geography
| Country: | Argentina | State/province: | Neuquén |
| Coordinates: | 38.8° South, 67.9° West (view map) | ||
| Paleocoordinates: | 41.4° South, 56.3° West | ||
| Basis of coordinate: | stated in text |
Time
| Period: | Paleogene | Epoch: | Paleocene |
| Stage: | Danian | 10 m.y. bin: | Cenozoic 1 |
| Key time interval: | Danian | Nannofossil zone: | NP3 |
| Age range of interval: | 66.00000 - 61.60000 m.y. ago |
Stratigraphy
| Formation: | Roca | ||
| Local section: | Cerro Azul | Local bed: | 53 m |
| Local order: | bottom to top |
Lithology and environment
| Primary lithology: | siltstone |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | microfossils |
Collection methods and comments
| Collection methods: | selective quarrying,chemical,peroxide,field collection,survey of museum collection |
| Rock censused: | 20 g |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Twenty-seven outcrop samples were studied, and approximately 20 g of dried rock was crushed and soaked in 200 mL of a hydrogen peroxide solution (H2O2) for 24 h, at a concentration of 35%. Residues were then washed and divided into grain fractions 63, 180 and 250 lm and dried at 60°C. All ostracods were hand-picked under a stereo microscope from each size fraction. Selected specimens were imaged in a EVO MA15 Zeiss scanning electron microscope at the Instituto Tecnologico de Micropaleontologia (itt Fossil) of the Universidade do Vale do Rio dos Sinos, Brazil. | |
Metadata
| Database number: | 232008 | ||
| Authorizer: | E. Vlachos | Enterer: | E. Vlachos |
| Created: | 2023-10-10 14:13:54 | Last modified: | 2023-10-10 14:13:54 |
| Access level: | the public | Released: | 2023-10-10 14:13:54 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 74039. | D. Ceolin, R. Whatley, G. Fauth and A. Concheyro. 2015. New genera and species of Ostracoda from the Maastrichtian and Danian of the Neuquén Basin, Argentina. Papers in Palaeontology 1(4): 425-495 [P. Wagner/P. Wagner/E. Vlachos] |