Bed B - Los Pololos [Navidad Formation]: Early/Lower Miocene, Chile
collected by Covacevich & Frassinetti
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia
- Nuculanida
- Nuculanidae
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Nuculana (Nuculana) informal sp. 2
Link 1807
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Scaphopoda
- Dentaliida
- Dentaliidae
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Dentalium sp.
Linnaeus 1758
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Gastropoda
- Opisthobranchia
- Cylichnidae
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Scaphander sp.
Monfort 1810
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Gastropoda
- Neogastropoda
- Turridae
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Gemmula subaegualis
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Gastropoda
- Neogastropoda
- Nassariidae
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? Nassarius sp.
Duméril 1806
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Gastropoda
- Naticidae
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Polinices cf. medinae
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Gastropoda
- Turritellidae
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Turritella breantiana
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Gastropoda
- Solariellidae
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? Solariella sp.
Wood 1842
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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: | 78553 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
Created: | 2008-02-08 00:17:48 | Last modified: | 2013-11-25 13:37:23 |
Access level: | authorizer only | Released: | 2009-02-08 00:17:48 |
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] |