Northern Cuchilla West Sample NCW-12 (Cretaceous of Argentina)

Where: Neuquén, Argentina (38.2° S, 68.7° W: paleocoordinates 40.5° S, 56.6° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Jagüel Formation (Malargüe Group), Early/Lower Maastrichtian (70.6 - 66.0 Ma)

• "Lower Jagüelian Substage (lower Maastrichtian?)"

• bed-level stratigraphic resolution

Environment/lithology: marginal marine; calcareous claystone

• "polyhaline... i.e., a normal marine environment which may have experienced salinity oscillations. The depth... was probably one of only a few meters"
• section consists of "clays, calcareous clays and limestones"

Size class: microfossils

Collection methods: Universidad de Buenos Aires collection

Primary reference: A. Bertels. 1974. Upper Cretaceous (Lower Maastrichtian?) ostracodes from Argentina. Micropaleontology 20(4):385-397 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 93947: authorized by John Alroy, entered by John Alroy on 07.02.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Ostracoda
 Podocopida - Cytheruridae
Cytherura ? sp., Cytherura ? jaguelensis, Paracytheridea rionegrina n. sp., "Cytherura argentinensis n. sp." = Semicytherura argentinensis
Cytherura ? sp. ostracod
FCEN-LM 706. Carapaces
Cytherura ? jaguelensis Bertels 1974 ostracod
FCEN-LM 703 (holotype), 704-705. Carapaces
Paracytheridea rionegrina n. sp. Bertels 1974 ostracod
FCEN-LM 707. Carapace
"Cytherura argentinensis n. sp." = Semicytherura argentinensis Bertels 1974 ostracod
FCEN-LM 701-702.Carapaces
 Podocopida - Brachycytheridae
"Alatacythere ? rocana" = Pterygocythereis rocana
"Alatacythere ? rocana" = Pterygocythereis rocana Bertels 1969 ostracod
FCEN-LM 675, 592 and 676. Carapaces
 Podocopida - Pseudocytheridae
Jonesia ? sp.
Jonesia ? sp. Brady 1866 ostracod
FCEN-LM 677-679. Carapaces
 Podocopida - Trachyleberididae
Wichmannella cretacea n. sp., Wichmannella araucana, Trachyleberis princeps, Platycythereis ? velata
Wichmannella cretacea n. sp. Bertels 1974 ostracod
FCEN-LM 696, 697-700.Carapaces
Wichmannella araucana Bertels 1969 ostracod
FCEN-LM 691-694.Carapaces
Trachyleberis princeps Bertels 1969 ostracod
FCEN-LM 597, 680- 682, 683-684. Carapaces
Platycythereis ? velata Bertels 1974 ostracod
FCEN-LM 593 (holotype), 594-596, 685-690. Carapaces
 Platycopida - Cytherellidae
Cytherella araucana n. sp.
Cytherella araucana n. sp. Bertels 1974 ostracod
FCEN-LM 672 (holotype) and FCEN-LM 673-674.(paratypes). Carapaces