Where: Chile (42.7° S, 74.1° W: paleocoordinates 43.5° S, 68.7° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Lacui Formation, Burdigalian (20.4 - 16.0 Ma)

• From the Lacui Formation, correlative with the Navidad Formation. 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).

• group of beds-level stratigraphic resolution

Environment/lithology: submarine fan; poorly lithified siliciclastic sediments

Size class: macrofossils

Preservation: original aragonite

Collected by Nielsen

• Repository: SGO.PI, Museo Nacional de Historia Natural, Santiago, Chile

Primary reference: S. N. Nielsen, K. Bandel, and B. Kröger. 2009. Palaeobiogeographical provenance, taphonomy, and mode of life of Aturia cubaensis (Cephalopoda, Nautiloidea) from Cainozoic deposits of Chile. Geobios 42:73-88 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 179976: authorized by Matthew Clapham, entered by Matthew Clapham on 05.07.2016, edited by Damián Perez

Creative Commons license: CC BY (attribution)