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