Bed A - Los Pololos [Navidad Formation]: Early/Lower Miocene, Chile
collected by Covacevich & Frassinetti

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Neotaenioglossa - Calyptraeidae
Crepidula sp. Lamarck 1799
Gastropoda - Turritellidae
Turritella ambulacrum Sowerby 1846
Gastropoda - Neogastropoda - Olividae
Lamprodomina dimidiata (Sowerby 1846)
Gastropoda - Neogastropoda - Buccinidae
Neptunea exarata
Siphonalia darwiniana
Siphonalia oncodes
Gastropoda - Neogastropoda - Nassariidae
Nassarius sp. Duméril 1806
Gastropoda - Neogastropoda - Drilliidae
? Clavus sp. Monfort 1810
Gastropoda - Personidae
Distorsio cf. thersites (Philippi 1887)
synonym of Distorsio ringens
Gastropoda - Littorinidae
Littorina sulcosa
Gastropoda - Naticidae
Neverita (Grossaulax) obtecta
Sinum subglobosus (Sowerby 1846)
Gastropoda - Heterostropha - Pyramidellidae
Turbonilla subcylindrica
Gastropoda - Opisthobranchia - Bullidae
"Bulla" triticum
Gastropoda - Opisthobranchia - Cylichnidae
Scaphander remondi (Philippi 1887)
Scaphander brevicula (Philippi 1887)
Bivalvia - Arcida - Glycymerididae
Glycymeris colchaguensis (Hupé 1854)
Bivalvia - Pectinida - Pectinidae
Chlamys sp. Röding 1798
Bivalvia - Ostreida - Pinnidae
Pinna sp. Linnaeus 1758
Bivalvia - Cardiida - Veneridae
Pitar (Pitarella) sp. (Palmer 1927)
synonym of Agriopoma
Chione volckmanni (Philippi 1887)
replaced by Ameghinomya volckmanni
Dosinia semilaevis (Philippi 1887)
Bivalvia - Cardiida - Mactridae
Mactra splendidula
Mactra oblonga Philippi 1887
Mactra pusilla Philippi 1887
Bivalvia - Cardiida - Lahillidae
Lahillia (Lahillia) angulata (Philippi 1887)
recombined as Lahillia angulata
Bivalvia - Cardiida - Tellinidae
"Tellina" sp. Linnaeus 1758
Bivalvia - Nuculanida - Nuculanidae
Nuculana (Nuculana) informal sp. 1 Link 1807
Scaphopoda - Dentaliida - Dentaliidae
Dentalium cf. majus
Dentalium sp. Linnaeus 1758
unclassified
Bryozoa indet. Ehrenberg 1831
Chondrichthyes - Lamniformes - Lamnidae
Lamna sp. Cuvier 1816
see common names

Geography
Country:Chile
Coordinates: 33.9° South, 71.9° West (view map)
Paleocoordinates:34.8° South, 66.4° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Neogene Epoch:Miocene
10 m.y. bin:Cenozoic 5
Key time interval:Early/Lower Miocene
Age range of interval:23.03000 - 15.97000 m.y. ago
Stratigraphy
Formation:Navidad
Stratigraphic resolution:bed
Stratigraphy comments: 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. Here, tentatively assigned to Early Miocene based on basal position with formation. STRATIGRAPHIC POSITION: From lower part of Navidad Fm.
Lithology and environment
Primary lithology:shelly/skeletal siltstone
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Fossiliferous siltstone. LITHIFICATION: Unknown.
Environment:coastal indet.
Geology comments: ENVIRONMENT: Shallow marine, on the basis of faunal composition.
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:78552
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2008-02-08 00:09:53 Last modified:2013-11-25 13:37:23
Access level:authorizer only Released:2009-02-08 00:09:53
Creative Commons license:CC BY
Reference information

Primary reference:

26402. D. Frassinetti and V. Covacevich. 1981. Architectonicidae en la Formacion Navidad, Mioceno, Chile central. Parte 1. Heliacinae (Mollusca: Gastropoda). Revista Geológica de Chile 13-14:35-47 [A. Hendy/A. Hendy/A. Hendy]