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: Early-Middle Miocene in text based on macrofossil biostratigraphy. 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 78521: authorized by Austin Hendy, entered by Austin Hendy on 07.02.2008, edited by Matthew Clapham
Creative Commons license: CC BY (attribution)
Taxonomic list
Scaphopoda | |
Dentalium aff. matanzasense tusk shell
Dentalium sp. Linnaeus 1758 tusk shell | |
Cephalopoda | |
| |
Gastropoda | |
Opalia rugosa wentletrap | |
Crepidula gregaria slipper shell | |
Turritella ambulacrum Sowerby 1846 turret shell | |
Sinum subglobosus, Polinices famula, Neverita hupeana, Neverita obtecta, Neverita (Grossaulax) cf. pachystoma, Natica sp., Natica solida
Sinum subglobosus Sowerby 1846 moon snail
Polinices famula moon snail
Neverita hupeana moon snail
Neverita obtecta moon snail
Neverita (Grossaulax) cf. pachystoma moon snail
Natica sp. Scopoli 1777 moon snail
Natica solida Blainville 1825 moon snail | |
Semicassis tuberculifera snail | |
"Distorsio (Rhysema) thersites" = Distorsio ringens
"Distorsio (Rhysema) thersites" = Distorsio ringens Philippi 1887 snail | |
"Tritonium bicegoi" = Sassia armata
"Tritonium bicegoi" = Sassia armata Hupé 1854 triton shell | |
Cypraea sp. Linnaeus 1758 cowry | |
"Ficus (Disconoficus) gayana" = Ficus gayana
"Ficus (Disconoficus) gayana" = Ficus gayana Covacevich and Frassinnetti 1980 fig shell | |
Lamprodomina dimidiata, "Olivancillaria (Lintricula) tumorifera" = Olivancillaria claneophila
Lamprodomina dimidiata Sowerby 1846 olive snail
"Olivancillaria (Lintricula) tumorifera" = Olivancillaria claneophila Duclos 1835 olive snail | |
Cancellaria medinae Philippi 1887 snail
Cancellaria rudolphi Covacevich and Frassinetti 1986 snail
Cancellaria nassariformis Covacevich and Frassinetti 1986 snail
Cancellaria reyesi Covacevich and Frassinetti 1986 snail | |
Pseudoliva cepa, "Siphonalia subreflexa" = Austrosipho subreflexa
Pseudoliva cepa true whelk
"Siphonalia subreflexa" = Austrosipho subreflexa Sowerby 1844 true whelk | |
"Proscaphella triplicata" = Palaeomelon triplicata
"Proscaphella triplicata" = Palaeomelon triplicata Sowerby 1846 volute | |
Acanthina medinae unicorn | |
Terebra undulifera auger snail | |
Gemmula subaequalis turrid
Gemmula discors turrid | |
"Conus medinae" = Strombus (Austrombus) medinae
"Conus medinae" = Strombus (Austrombus) medinae Philippi 1887 conch | |
Heliacus (Torinista) taverai Frassinetti and Covacevich 1981 snail | |
Acteon chilensis snail | |
Calliostoma sp. Swainson 1840 top snail
Gibbula venefica top snail | |
Scaphander remondi Philippi 1887 snail | |
Nerita chilensis snail | |
Bivalvia | |
Amiantis (Amiantis) navidadensis Frassinetti and Covacevich 1993 venus clam
Chione (Chione) rodulfi Frassinetti and Covacevich 1993 venus clam
Dosinia (Dosinia) semilaevis Philippi 1887 venus clam | |
Tellina sp. Linnaeus 1758 tellin clam | |
"Lahillia (Lahillia) angulata" = Lahillia angulata
"Lahillia (Lahillia) angulata" = Lahillia angulata Philippi 1887 clam | |
Lucinoma promaucana Philippi 1877 clam
Miltha (Matanziella) vidali Philippi 1887 clam | |
Pinna semicostata Philippi 1887 oyster | |
Crassostrea "sp. 1" Sacco 1897 oyster | |
Anadara (Anadara) lirata Philippi 1887 ark | |
Glycymeris (Glycymerita) ibariformis Frassinetti and Covacevich 1983 clam | |
Cucullaea chilensis Philippi 1887 clam | |
Thecostraca | |
Balanus sp. Da Costa 1778 barnacle |