Cerro Azul CA 17: Danian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Clinocythereis sp.
1 specimen
Ostracoda - Platycopida - Cytherellidae
Cytherella semicatillus n. sp. Ceolin et al. 2015
19 specimens
Cytherella saraballentae Ceolin et al. 2015
12 specimens
Cytherella terminopunctata Holden 1964
15 specimens
Ostracoda - Podocopida - Pontocyprididae
Argilloecia abnormalis Ceolin et al. 2015
1 specimen
Argilloecia hydrodynamicus Ceolin et al. 2015
8 specimens
Ostracoda - Podocopida - Candonidae
Paracypris imaguncula Ceolin et al. 2015
1 specimen
Paracypris bertelsae Ceolin et al. 2015
9 specimens
Ostracoda - Podocopida - Bythocytheridae
Bythocythere costata Bertels 1973
1 specimen
Ostracoda - Podocopida - Trachyleberididae
Togoina argentinensis
1 specimen
Huantraiconella costata (Bertels 1975)
3 specimens
Huantraiconella prima Bertels 1968
1 specimen
Actinocythereis rex Bertels 1973
3 specimens
Actinocythereis indigena Bertels 1969
11 specimens
Neoveenia argentinensis Bertels 1969
2 specimens
Orthrocosta phantasia Ceolin et al. 2015
6 specimens
Orthrocosta decores Ceolin et al. 2015
4 specimens
Castillocythereis multicastrum Ceolin et al. 2015
9 specimens
Trachyleberis weiperti Bertels 1969
7 specimens
Cythereis trajectiones n. sp. Ceolin et al. 2015
12 specimens
Cythereis stratios Ceolin et al. 2015
7 specimens
Henryhowella (Henryhowella) nascens Bertels 1969
4 specimens
Henryhowella (Wichmannella) meridionalis (Bertels 1969)
17 specimens
original and current combination Wichmannella meridionalis
Petalocythereis schilleri (Bertels 1973)
4 specimens
Hysterocythereis coinotes Ceolin et al. 2015
3 specimens
Ostracoda - Podocopida - Cytheruridae
Cytheropteron bidentinos Ceolin et al. 2015
8 specimens
Cytheropteron translimitares Ceolin et al. 2015
3 specimens
Aversovalva glochinos Ceolin et al. 2015
3 specimens
Ostracoda - Podocopida - Pectocytheridae
Keijia huantraicoensis (Bertels 1969)
13 specimens
unclassified
Unicapella sp. Dingle 1980
1 specimen
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: NP1
Age range of interval:66.00000 - 61.60000 m.y. ago
Stratigraphy
Formation:Jagüel
Local section:Cerro Azul Local bed:23 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:232000
Authorizer:E. Vlachos Enterer:E. Vlachos
Created:2023-10-10 14:09:29 Last modified:2023-10-10 14:09:29
Access level:the public Released:2023-10-10 14:09:29
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]