Loc. 3 [Guadal Formation]: Early/Lower Miocene, Chile
collected by Frassinetti & Covacevich 1986-1988
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Malacostraca
- Decapoda
- Carcinidae
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Archaeogeryon cf. patagonicus
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Gastropoda
- Turritellidae
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Turritella ambulacrum
Sowerby 1846
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Gastropoda
- Vermetidae
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Serpulorbis sp.
Sasso 1827
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Gastropoda
- Ficidae
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Ficus carolinae
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Gastropoda
- Cassidae
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Semicassis ovulum
(Ortmann 1900)
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Gastropoda
- Struthiolariidae
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Struthiolarella ameghinoi
(Ihering 1897)
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Gastropoda
- Neogastropoda
- Volutidae
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? Adelomelon burmeister
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Proscaphella informal sp. 3
Ihering 1907
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| synonym of Miomelon | |||||||
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Gastropoda
- Neogastropoda
- Fasciolariidae
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Taioma cf. tricarinata
Finlay and Marwick 1937
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Gastropoda
- Naticidae
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Naticidae indet.
Guilding 1834
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Gastropoda
- Trochidae
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Trochus laevis
Sowerby 1846
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Bivalvia
- Mytilida
- Mytilidae
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Modiolus cf. ameghinoi
(Ihering 1907)
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Bivalvia
- Ostreida
- Pinnidae
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Pinna magellanica
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Bivalvia
- Pectinida
- Pectinidae
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"Chlamys" centralis
(Sowerby 1846)
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| recombined as Jorgechlamys centralis | |||||||
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Bivalvia
- Arcida
- Limopsidae
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Limopsis insolita
(Sowerby 1846)
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Bivalvia
- Arcida
- Cucullaeidae
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Cucullaea alta
Sowerby 1846
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Bivalvia
- Cardiida
- Veneridae
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Chione argentina
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Chione cf. meridionalis
Oldroyd 1921
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| recombined as Chione (Chione) compta meridionalis | |||||||
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Bivalvia
- Cardiida
- Cardiidae
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Patagonicardium philippi
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Patagonicardium iheringi
Frassinetti and Covacevich 1999
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Trachycardium puelchum
(Sowerby 1846)
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Bivalvia
- Carditida
- Crassatellidae
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Crassatella cf. longior
Ihering 1897
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Bivalvia
- Carditida
- Carditidae
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Pleuromeris elegantoides
(Ortman 1902)
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Cardiocardita inaequalis
(Philippi 1887)
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Rhynchonellata
- Terebratulida
- Terebratellidae
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Iheringithyris sp.
Levy 1961
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unclassified
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Bryozoa sp.
Ehrenberg 1831
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Polychaeta
- Sabellida
- Serpulidae
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Serpula sp.
Linnaeus 1758
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Echinoidea
- Spatangoida
- Schizasteridae
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Schizaster cf. ameghinoi
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Anthozoa
- Scleractinia
- Flabellidae
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Flabellum aequalis
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| see common names | |||||||
Geography
| Country: | Chile |
| Coordinates: | 47.0° South, 72.4° West (view map) |
| Paleocoordinates: | 47.9° South, 66.1° West |
| Basis of coordinate: | stated in text |
| 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 - 15.98000 m.y. ago |
Stratigraphy
| Formation: | Guadal | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Guadal Fm, which is overlain by the Galera Fm (Early-Middle Miocene). AGE: Late Oligocene-Early Miocene in text. Composition of the fauna reveals close similarity with those of the Patagoniano, and in particular the Monte Leon Fm. An Early Miocene age could be moe precise on the basis of sequence stratigraphic events. Early Miocene is assigned here. STRATIGRAPHIC POSITION: From upper part of the Guadal Formation. | |||||
Lithology and environment
| Primary lithology: | gray lithified sandstone |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Dark gray sandstone. LITHIFICATION: Lithified, on the basis of figured specimens. | |
| Environment: | offshore |
| Geology comments: ENVIRONMENT: Siliciclastic, and not particularly shallow (i.e. lower inner-middle shelf) based on faunal compisition. | |
Taphonomy
| Modes of preservation: | body,cast,mold/impression |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | poor |
Collection methods and comments
| Collection methods: | surface (in situ),field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | Frassinetti & Covacevich | Collection dates: | 1986-1988 |
| Collection method comments: COLLECTOR: Presumably Frassinetti, C., and Covacevich, C. (1986-1988). REPOSITORY: Museo Nacional de Historia Natural, Santiago, Chile | |||
| Taxonomic list comments:COVERAGE: Exhaustive for gastropoda, bivalvia, anthozoa, bryozoa, brachiopoda, annelida, arthropoda, and echinodermata. NOMENCLATURE: Authoritative publication with taxonomic assignments to species-resolution. | |||
Metadata
| Database number: | 78427 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2008-02-06 17:34:12 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | authorizer only | Released: | 2009-02-06 17:34:12 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 26388. | D. Frassinetti and V. Covacevich. 1999. Invertibrados fósiles marinos de la Formación Guadal (Oligoceno superio-Mioceno inferior) en Pampa, Castillo region, región de Aisén, Chile. Servico Nacional de Geologia y Mineria Chile Boletin 51:1-96 [A. Hendy/A. Hendy] |