Loc. 4 - Punta Alta: Burdigalian, Chile
collected by Covacevich & Frassinetti

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Nautilida - Aturiidae
Aturia sp. Bronn 1838
Scaphopoda - Dentaliida - Dentaliidae
Dentalium majus
Dentalium sulcosum
Gastropoda - Heterostropha - Pyramidellidae
Turbonilla acicula Holmes 1859
Gastropoda - Heterostropha - Architectonicidae
Architectonica (Discotectonica) navidadensis
original and current combination Discotectonica
Gastropoda - Solariellidae
Solariella sp. Wood 1842
Gastropoda - Opisthobranchia - Bullidae
"Bulla" sp. Linnaeus 1758
Gastropoda - Opisthobranchia - Cylichnidae
Scaphander sp. Monfort 1810
Gastropoda - Turritellidae
Turritella trilirata Philippi 1887
recombined as Incatella trilirata
Turritella sp. Lamarck 1799
Gastropoda - Naticidae
Polinices medinae
Sinum cf. pullus
Gastropoda - Neogastropoda - Buccinidae
Siphonalia subreflexa (Sowerby 1844)
recombined as Austrosipho subreflexa
Siphonalia domeykoana
Gastropoda - Neogastropoda - Cancellariidae
Cancellaria medinae Philippi 1887
Gastropoda - Neogastropoda - Terebridae
Terebra undulifera
Gastropoda - Neogastropoda - Clavatulidae
Turricula (Surcula) sp. (Adams and Adams 1853)
synonym of Turricula
Gastropoda - Neogastropoda - Turridae
Pleurotoma lanceolata
synonym of Turris
Gemmula subaequalis
Gemmula discors
Gastropoda - Neogastropoda - Borsoniidae
? Borsonella sp. Dall 1908
Gastropoda - Neogastropoda - Volutidae
Proscaphella triplicata (Sowerby 1846)
recombined as Palaeomelon triplicata
Proscaphella cf. domeykoana (Philippi 1887)
recombined as Palaeomelon domeykoana
Gastropoda - Aporrhaidae
Hemichenopus araucanus (Phillippi 1887)
Gastropoda - Personidae
Distorsio (Rhysema) thersites (Philippi 1887)
synonym of Distorsio ringens
Gastropoda - Cassidae
Semicassis tuberculifera
Semicassis monilifera (Sowerby 1846)
Bivalvia - Nuculanida - Sareptidae
Portlandia sp. Mörch 1857
Bivalvia - Nuculanida - Nuculanidae
Nuculana (Sacella) sp. Link 1807
Nuculana (Poroleda) sp. (Hutton 1893)
original and current combination Poroleda
Bivalvia - Nuculanida - Malletiidae
Neilo volckmanni
Bivalvia - Nuculida - Nuculidae
Nucula (Leionucula) lebuensis
original and current combination Leionucula
Bivalvia - Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758
Bivalvia - Arcida - Glycymerididae
Glycymeris sp. Da Costa 1778
Bivalvia - Arcida - Limopsidae
Limopsis (Limopsis) sp. Sassi 1827
Bivalvia - Cardiida - Cardiidae
Cardium cf. volckmanni
Bivalvia - Cardiida - Tellinidae
Tellina araucana
Tellina sp. Linnaeus 1758
Bivalvia - Cardiida - Anatinellidae
Anatina araucana
Bivalvia - Pholadida - Corbulidae
Caryocorbula sp. (Gardner 1926)
original and current combination Corbula (Caryocorbula)
Bivalvia - Hiatellida - Hiatellidae
Panopea vetula
Bivalvia - Lucinida - Lucinidae
Lucinoma promaucana (Philippi 1877)
Anthozoa - Scleractinia - Flabellidae
Flabellum costatum
see common names

Geography
Country:Chile
Coordinates: 33.9° South, 71.9° West (view map)
Paleocoordinates:34.7° South, 66.9° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Neogene Epoch:Miocene
Stage:Burdigalian 10 m.y. bin:Cenozoic 5
Key time interval:Burdigalian
Age range of interval:20.44000 - 15.98000 m.y. ago
Stratigraphy
Formation:Navidad
Stratigraphic resolution:group of beds
Stratigraphy comments: 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.
Lithology and environment
Primary lithology: poorly lithified "siliciclastic"
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Interbedded sandstone and mudstone. LITHIFICATION: Poorly lithified to lithified, based on outcrop photos.
Environment:submarine fan
Geology comments: ENVIRONMENT: Sedimentologic, ichnologic, and paleontologic studies suggest deposition at bathyal depths for part of the Navidad Formation and correlative units (Osorio and Elgueta 1990; Antinao 2000; Finger et al. 2007; Encinas et al. 2008, 2012). Many of the mollusks are redeposited shallow-water species.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Preservation of anatomical detail:good
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Collectors:Covacevich & Frassinetti
Collection method comments: COLLECTOR: Presumably V. Covacevich and D. Frassinetti. R, prior to 1980. REPOSITORY: SGO.
Taxonomic list comments:COVERAGE: Exhaustive for bivalvia and gastropoda. NOMENCLATURE: Authoritative publication, and with taxonomic assignments to species and subgenus resolution.
Metadata
Database number:78524
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:M. Clapham Research group:marine invertebrate
Created:2008-02-07 20:05:12 Last modified:2019-08-18 10:43:10
Access level:the public Released:2008-02-07 20:05:12
Creative Commons license:CC BY
Reference information

Primary reference:
26399. 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]