Where: Chile (33.9° S, 71.9° W: paleocoordinates 34.7° S, 66.9° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Navidad Formation, Burdigalian (20.4 - 16.0 Ma)
• STRATIGRAPHIC RELATIONS: From 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.
• group of beds-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 78524: authorized by Austin Hendy, entered by Austin Hendy on 07.02.2008
Creative Commons license: CC BY (attribution)
Taxonomic list
Anthozoa | |
Flabellum costatum stony coral | |
Bivalvia | |
Portlandia sp. Mörch 1857 clam | |
Neilo volckmanni clam | |
Nuculana (Sacella) sp., "Nuculana (Poroleda) sp." = Poroleda
Nuculana (Sacella) sp. Link 1807 pointed nut clam
"Nuculana (Poroleda) sp." = Poroleda Hutton 1893 pointed nut clam | |
"Nucula (Leionucula) lebuensis" = Leionucula
"Nucula (Leionucula) lebuensis" = Leionucula nut clam | |
Ostrea sp. Linnaeus 1758 oyster | |
Limopsis (Limopsis) sp. Sassi 1827 clam | |
Glycymeris sp. Da Costa 1778 clam | |
Panopea vetula clam | |
Cardium cf. volckmanni cockle | |
Tellina araucana tellin clam
Tellina sp. Linnaeus 1758 tellin clam | |
Anatina araucana clam | |
Caryocorbula sp. Gardner 1926 clam | |
Lucinoma promaucana Philippi 1877 clam | |
Scaphopoda | |
Dentalium majus tusk shell
Dentalium sulcosum tusk shell | |
Gastropoda | |
Scaphander sp. Monfort 1810 snail | |
"Bulla" sp. Linnaeus 1758 snail | |
"Architectonica (Discotectonica) navidadensis" = Discotectonica
"Architectonica (Discotectonica) navidadensis" = Discotectonica snail | |
Turbonilla acicula Holmes 1859 snail | |
Hemichenopus araucanus Phillippi 1887 snail | |
"Proscaphella triplicata" = Palaeomelon triplicata, "Proscaphella cf. domeykoana" = Palaeomelon domeykoana
"Proscaphella triplicata" = Palaeomelon triplicata Sowerby 1846 volute
"Proscaphella cf. domeykoana" = Palaeomelon domeykoana Philippi 1887 volute | |
Cancellaria medinae Philippi 1887 snail | |
"Turricula (Surcula) sp." = Turricula
"Turricula (Surcula) sp." = Turricula Schumacher 1817 snail | |
? Borsonella sp. Dall 1908 snail | |
Terebra undulifera auger snail | |
"Siphonalia subreflexa" = Austrosipho subreflexa, Siphonalia domeykoana
"Siphonalia subreflexa" = Austrosipho subreflexa Sowerby 1844 true whelk
Siphonalia domeykoana true whelk | |
Semicassis tuberculifera snail
Semicassis monilifera Sowerby 1846 snail | |
"Distorsio (Rhysema) thersites" = Distorsio ringens
"Distorsio (Rhysema) thersites" = Distorsio ringens Philippi 1887 snail | |
Sinum cf. pullus moon snail
Polinices medinae moon snail | |
"Turritella trilirata" = Incatella trilirata, Turritella sp.
"Turritella trilirata" = Incatella trilirata Philippi 1887 turret shell
Turritella sp. Lamarck 1799 turret shell | |
Solariella sp. Wood 1842 snail | |
Cephalopoda | |
Aturia sp. Bronn 1838 nautiloid |