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
Size class: macrofossils
Collection methods: surface (in situ),
• COLLECTOR: Probably authors (J. Chiesa and H. Camacho). REPOSITORY: Unknown; some described material is reposited at CIRGEO (unknown location).
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 71600: authorized by Austin Hendy, entered by Austin Hendy on 30.04.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
Echinoidea | |
Brisaster sp. Gray 1855 heart urchin | |
Rhynchonellata | |
Terebratella sp. d'Orbigny 1847 | |
Gastropoda | |
Turritella aff. ambulacrum Sowerby 1846 turret shell | |
Polinices sp. Monfort 1810 moon snail | |
Fusinus patagoniensis n. sp.
Fusinus patagoniensis n. sp. Chiesa and Camacho 2001 snail | |
Bivalvia | |
Neilo biradiata Chiesa and Camacho 2001 clam | |
Brachidontes sp. Swainson 1840 mussel | |
Zygochlamys sp. Ihering 1907 scallop | |
Pinna sp. Linnaeus 1758 oyster | |
Glycymeris cf. ibari Philippi 1887 clam | |
"Loxocardium puelchum" = Trachycardium puelchum, Laevicardium sp.
"Loxocardium puelchum" = Trachycardium puelchum Sowerby 1846 cockle
Laevicardium sp. Swainson 1840 cockle | |
Panopea nucleus, Panopea zinsmeisteri n. sp.
Panopea nucleus Ihering 1899 clam
Panopea zinsmeisteri n. sp. Chiesa and Camacho 2001 clam | |
Venericardia (Venericor) sp. Stewart 1930 clam |