Sur Río Chico (970-975) (Paleocene of Argentina)

Where: Santa Cruz, Argentina (51.7° S, 69.2° W)

• Paleocoordinates: 52.2° S, 60.9° W (Wright 2013)

• coordinate based on unpublished field data

When: NP3 nannofossil zone, Campo Bola Formation, Early/Lower Paleocene (66.0 - 61.7 Ma)

Environment/lithology: marine; fine-grained, gray claystone and siltstone

• Well-developed marine succession of fine to coarse, gray to grizzly glauconitic-sandstones with poor compaction and gray to grizzly claystones and siltstones, with low participation of sandstones in the upper part

Size class: microfossils

Collected by Baker Atlas company in 2003

Collection methods: core,

Primary reference: M. S. G. Estebenet, M. V. Guler, and J. P. Pérez Panera. 2021. Late Maastrichtian to Danian organic-walled dinoflagellate cysts and calcareous nannofossils from eastern Austral Basin, Patagonia, Argentina. Review of Palaeobotany and Palynology 285(2):1-18 [E. Vlachos/F. Aspromonte]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 232043: authorized by Evangelos Vlachos, entered by Franco Aspromonte on 12.10.2023, edited by Antonio Pasini

Creative Commons license: CC0 (CC0)

Taxonomic list

Coccolithophyceae
 Coccolithales - Coccolithaceae
Reticulofenestra
  -
Gastropoda
 Neogastropoda - Turridae
Sullivania danica Brotzen 1959 turrid
Reticulofenestra
  -
Coccolithophyceae
 Coccolithales - Coccolithaceae
Holodiscolithus solidus Deflandre and Fert 1954
Data on abundance represent individual counts on 650 fields of view
Chiasmolithus danicus Hay and Mohler 1967
Data on abundance represent individual counts on 650 fields of view
 Isochrysidales - Prinsiaceae
Prinsius dimorphosus Perch-Nielsen 1977
Data on abundance represent individual counts on 650 fields of view
 Prymnesiophycidae - Prymnesiophycidae
Coccolithus pelagicus Wallich 1877
Data on abundance represent individual counts on 650 fields of view
 Eiffellithales - Chiastozygaceae
Placozygus sigmoides Romein 1979
Data on abundance represent individual counts on 650 fields of view
Cervisiella saxea
  -
"Cervisiella saxea" = Cervisiella saxea
"Cervisiella saxea" = Cervisiella saxea Stradner 1961
Data on abundance represent individual counts on 650 fields of view
Thoracosphaera saxea
  -
"Thoracosphaera saxea" = Cervisiella saxea
"Thoracosphaera saxea" = Cervisiella saxea Stradner 1961
Cervisiella operculata
  -
"Cervisiella operculata" = Cervisiella operculata
"Cervisiella operculata" = Cervisiella operculata Bramlette and Martini 1964
Data on abundance represent individual counts on 650 fields of view
Thoracosphaera operculata
  -
"Thoracosphaera operculata" = Cervisiella operculata
"Thoracosphaera operculata" = Cervisiella operculata Bramlette and Martini 1964
Toweius occultatus
  - Coccolithacea
Toweius occultatus Locker 1967