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
Cephalopoda | |
Aturia sp. Bronn 1838 nautiloid | |
Scaphopoda | |
Dentalium majus tusk shell
Dentalium sulcosum tusk shell | |
Gastropoda | |
Turbonilla acicula Holmes 1859 snail | |
"Architectonica (Discotectonica) navidadensis" = Discotectonica
"Architectonica (Discotectonica) navidadensis" = Discotectonica snail | |
Solariella sp. Wood 1842 snail | |
"Bulla" sp. Linnaeus 1758 snail | |
Scaphander sp. Monfort 1810 snail | |
"Turritella trilirata" = Incatella trilirata, Turritella sp.
"Turritella trilirata" = Incatella trilirata Philippi 1887 turret shell
Turritella sp. Lamarck 1799 turret shell | |
Polinices medinae moon snail
Sinum cf. pullus moon snail | |
"Siphonalia subreflexa" = Austrosipho subreflexa, Siphonalia domeykoana
"Siphonalia subreflexa" = Austrosipho subreflexa Sowerby 1844 true whelk
Siphonalia domeykoana true whelk | |
Cancellaria medinae Philippi 1887 snail | |
Terebra undulifera auger snail | |
"Turricula (Surcula) sp." = Turricula
"Turricula (Surcula) sp." = Turricula Schumacher 1817 snail | |
? Borsonella sp. Dall 1908 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 | |
Hemichenopus araucanus Phillippi 1887 snail | |
"Distorsio (Rhysema) thersites" = Distorsio ringens
"Distorsio (Rhysema) thersites" = Distorsio ringens Philippi 1887 snail | |
Semicassis tuberculifera snail
Semicassis monilifera Sowerby 1846 snail | |
Bivalvia | |
Portlandia sp. Mörch 1857 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 | |
Neilo volckmanni clam | |
"Nucula (Leionucula) lebuensis" = Leionucula
"Nucula (Leionucula) lebuensis" = Leionucula nut clam | |
Ostrea sp. Linnaeus 1758 oyster | |
Glycymeris sp. Da Costa 1778 clam | |
Limopsis (Limopsis) sp. Sassi 1827 clam | |
Cardium cf. volckmanni cockle | |
Tellina araucana tellin clam
Tellina sp. Linnaeus 1758 tellin clam | |
Anatina araucana clam | |
Caryocorbula sp. Gardner 1926 clam | |
Panopea vetula clam | |
Lucinoma promaucana Philippi 1877 clam | |
Anthozoa | |
Flabellum costatum stony coral |