Locality A (from Ihering 1904, 1907, 1914) - Río Foyel Fm (Oligocene of Argentina)

Where: Argentina (41.7° S, 71.4° W: paleocoordinates 43.6° S, 63.1° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Rio Foyel Formation, Early/Lower Oligocene (33.9 - 28.4 Ma)

• STRATIGRAPHIC RELATIONS: From Rio Foyel Fm. Unknown stratigraphic relations. THICKNESS: From lower 7 m of 18 m thick section. AGE: Considered to be Late Eocene to Early Oligocene according to foraminiferal, ostracod and microfloral biostratigraphy by Chiesa and Camacho (2001). Griffin et al. (2004) indicated an Early Oligocene age with Sr dates. STRATIGRAPHIC POSITION: From lower part of formation.

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, sandy, calcareous shale

• ENVIRONMENT: Offshore, siliciclastic setting.
• SPECIFIC LITHOLOGY: Massive to finely bedded shale with calcareous sandstone beds. LITHIFICATION: Presumably lithified, based on age and facies (concretions and calcarenites

Size class: macrofossils

Collection methods: surface (in situ),

• COLLECTOR: Unknown collector, possibly authors (publication in spanish). REPOSITORY: Museo Nacional de Buenos Aires.

Primary reference: J. O. Chiesa and H. H. Camacho. 2001. Invertebrados marino Eocenos de la parte de Río Negro, Argentina. Revista Española de Paleontología 16(2):299-316 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 71594: authorized by Austin Hendy, entered by Austin Hendy on 30.04.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE; Exhaustive for brachiopods, bivalves, and gastropods. NOMENCLATURE: Authoritative publication, using fairly modern nomenclature and species-level assignments.
Bivalvia
 Hiatellida - Hiatellidae
Panopea nucleus Ihering 1899 clam
Gastropoda
 Stromboidea - Struthiolariidae