Where: Neuquén, Argentina (38.8° S, 67.9° W: paleocoordinates 41.4° S, 56.3° W)
• coordinate stated in text
When: NP3 nannofossil zone, Roca Formation, Danian (66.0 - 61.6 Ma)
Environment/lithology: marine; siltstone
Size class: microfossils
Collection methods: quarrying, chemical, peroxide,
• 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.
Primary reference: 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]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 232010: authorized by Evangelos Vlachos, entered by Evangelos Vlachos on 10.10.2023
Creative Commons license: CC BY (attribution)
Taxonomic list
Ostracoda | |
Cytherella terminopunctata Holden 1964 ostracod | |
Keijia kratistos Ceolin et al. 2015 ostracod | |
Actinocythereis biposterospinata, Neoveenia argentinensis, Orthrocosta atopos, "Henryhowella (Wichmannella) meridionalis" = Wichmannella meridionalis, Cythereis stratios, Huantraiconella prima, Huantraiconella costata
Actinocythereis biposterospinata Bertels 1973 ostracod
Neoveenia argentinensis Bertels 1969 ostracod
Orthrocosta atopos Ceolin et al. 2015 ostracod
"Henryhowella (Wichmannella) meridionalis" = Wichmannella meridionalis Bertels 1969 ostracod
Cythereis stratios Ceolin et al. 2015 ostracod
Huantraiconella prima Bertels 1968 ostracod
Huantraiconella costata Bertels 1975 ostracod | |
Cytheropteron hyperdictyon Ceolin et al. 2015 ostracod | |
Palmoconcha similis Bertels 1973 ostracod | |
Paracypris imaguncula Ceolin et al. 2015 ostracod |