Where: Chile (44.6° S, 74.8° W: paleocoordinates 45.5° S, 69.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Ipún Beds Formation, Burdigalian (20.4 - 16.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Ipún Beds, correlative with the Navidad Fm, for which lithostratigraphic relationships are not discussed (in english) in text. AGE: The age of the Navidad Formation and equivalent units has been a matter of debate for decades (see Gutiérrez et al. 2013; Finger et al. 2013, and Le Roux et al. 2013; references therein). An early Miocene age for the Navidad Formation was derived from studies on mollusks, shark teeth, Sr isotopes, and radiometric (Ar/Ar and K/Ar) dating of volcanic clasts in this unit (Gutiérrez et al. 2013; Finger et al. 2013; references therein). A middle to late Miocene or early Pliocene age for this unit had been interpreted from the study of foraminifers, ostracodes, pollen, Sr isotopes, and Ar/Ar dating of volcanic clasts (Finger et al. 2013 and references therein). Finger (2013) reexamined planktic foraminifers ascribed to the late Miocene and early Pliocene (in Finger et al. 2007), whereupon they recognized that they were misidentified and reassigned the assemblages to the early Miocene (Burdigalian Stage, ~21–16 Ma). Fossils in the Navidad Formation and correlative units yielded 87Sr/86Sr ages of 24–16 Ma (Nielsen and Glodny 2009). STRATIGRAPHIC POSITION: From unknown position within Navidad Fm.

• bed-level stratigraphic resolution

Environment/lithology: submarine fan; poorly lithified siliciclastic sediments

Size class: macrofossils

Collected by Covacevich & Frassinetti

Collection methods: surface (in situ),

• COLLECTOR: Presumably V. Covacevich and D. Frassinetti. R, prior to 1980. REPOSITORY: SGO.

Primary reference: V. Covacevich and D. Frassinetti. 1986. El genero Cancellaria en el Mioceno de Chile con descripcion de cuatro especies nuevas (Gaastropoda: Cancellariidae). Revista Geológica de Chile 28-29:33-67 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 78525: authorized by Austin Hendy, entered by Austin Hendy on 07.02.2008, edited by Mihaela Krause, Damián Perez and Matthew Clapham

Creative Commons license: CC BY (attribution)