Loc. 4 [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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unclassified
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Scapellum sp.
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Gastropoda
- Epitoniidae
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Epitonium sp.
Bolten 1798
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Gastropoda
- Naticidae
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Naticidae indet.
Guilding 1834
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Gastropoda
- Vermetidae
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Serpulorbis sp.
Sasso 1827
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Gastropoda
- Trochidae
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"Gibbula" dalli
Ihering 1897
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Gastropoda
- Lepetellida
- Fissurellidae
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? Fissurella sp.
Bruguière 1789
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Bivalvia
- Nuculanida
- Malletiidae
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Neilo ornata
(Sowerby 1846)
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Bivalvia
- Nuculida
- Nuculidae
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Nucula reticulata
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Bivalvia
- Pholadomyida
- Pholadomyidae
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Pholadomya (Bucardiomya) sp.
(Rollier 1912)
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Bivalvia
- Hiatellida
- Hiatellidae
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Panopea ? bagualesia
(Ihering 1907)
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Bivalvia
- Solenida
- Solenidae
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Solena sp.
Mörch 1853
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Bivalvia
- Pholadida
- Pholadidae
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Pholadidea patagonica
(Philippi 1887)
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Bivalvia
- Cardiida
- Veneridae
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Chione cf. meridionalis
Oldroyd 1921
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| recombined as Chione (Chione) compta meridionalis | |||||||
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Chione ? patagonica
(Philippi 1887)
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Bivalvia
- Cardiida
- Tellinidae
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? Macoma sp.
Leach 1819
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Bivalvia
- Cardiida
- Cardiidae
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? Patagonicardium quadalensis
Frassinetti and Covacevich 1999
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Bivalvia
- Mytilida
- Mytilidae
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Modiolus cf. ameghinoi
(Ihering 1907)
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Modiolus cf. ameghinoi
(Ihering 1907)
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Bivalvia
- Pectinida
- Pectinidae
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Zygochlamys geminatus
(Sowerby 1846)
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| recombined as Zygochlamys geminata | |||||||
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Bivalvia
- Ostreida
- Malleidae
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Isognomon quadrisulcatus
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Bivalvia
- Ostreida
- Ostreidae
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Crassostrea cf. hatcheri
(Ihering 1899)
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Bivalvia
- Arcida
- Parallelodontidae
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Cucullaria darwini
(Philippi 1887)
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Lingulata
- Discinida
- Disciniidae
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Discinisca sp.
Gray 1840
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Rhynchonellata
- Terebratulida
- Terebratellidae
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Iheringithyris sp.
Levy 1961
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Terebratella informal sp. 1
d'Orbigny 1847
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Terebratella informal sp. 2
d'Orbigny 1847
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unclassified
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Bryozoa sp.
Ehrenberg 1831
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Thecostraca
- Balanomorpha
- Balanidae
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Balanus sp.
Da Costa 1778
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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: | 78428 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2008-02-06 17:35:07 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | authorizer only | Released: | 2009-02-06 17:35:07 |
| 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] |