Loc. 1 [Guadal Formation]: Early/Lower Miocene, Chile
collected by Frassinetti & Covacevich 1986-1988
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Echinoidea
- Clypeasteroida
- Monophorasteridae
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Iheringiella patagonensis
(Desor 1847)
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Rhynchonellata
- Terebratulida
- Terebratellidae
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Terebratella informal sp. 2
d'Orbigny 1847
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Polychaeta
- Sabellida
- Serpulidae
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Serpula sp.
Linnaeus 1758
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Gastropoda
- Trochidae
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"Gibbula" dalli
Ihering 1897
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Gastropoda
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Peonza cf. torquata
Olivera 1994
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Gastropoda
- Opisthobranchia
- Cylichnidae
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Scaphander sp.
Monfort 1810
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Gastropoda
- Turritellidae
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Turritella ambulacrum
Sowerby 1846
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Gastropoda
- Neotaenioglossa
- Calyptraeidae
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Trochita sp.
Schumacher 1817
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Calyptraea sp.
Lamarck 1799
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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
- Neogastropoda
- Buccinidae
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"Siphonalia" sp.
Adams 1863
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Gastropoda
- Neogastropoda
- Volutidae
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Proscaphella informal sp. 2
Ihering 1907
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synonym of Miomelon | |||||||
Proscaphella informal sp. 4
Ihering 1907
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synonym of Miomelon | |||||||
Proscaphella cossmanni
Ihering 1907
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Gastropoda
- Neogastropoda
- Muricidae
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Trophon sp.
Montfort 1810
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Trophon cf. patagonicus
(Sowerby 1846)
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Gastropoda
- Struthiolariidae
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Struthiolarella ameghinoi
(Ihering 1897)
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Gastropoda
- Cassidae
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Semicassis ovulum
(Ortmann 1900)
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Gastropoda
- Ficidae
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Ficus carolina
(d'Orbigny 1847)
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Gastropoda
- Vermetidae
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Serpulorbis sp.
Sasso 1827
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Bivalvia
- Nuculanida
- Malletiidae
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Neilo ornata
(Sowerby 1846)
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Bivalvia
- Pectinida
- Pectinidae
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"Chlamys" centralis
(Sowerby 1846)
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recombined as Jorgechlamys centralis | |||||||
Zygochlamys geminatus
(Sowerby 1846)
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recombined as Zygochlamys geminata | |||||||
Bivalvia
- Ostreida
- Pinnidae
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Pinna magellanica
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Bivalvia
- Ostreida
- Ostreidae
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Crassostrea aff. hatcheri
(Ihering 1899)
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Bivalvia
- Arcida
- Cucullaeidae
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Cucullaea alta
Sowerby 1846
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Bivalvia
- Arcida
- Arcidae
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Arca (Arca) patagonica
(Ihering 1897)
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Bivalvia
- Cardiida
- Lahillidae
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Lahillia sp.
Cossmann 1899
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Bivalvia
- Cardiida
- Cardiidae
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Patagonicardium philippi
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Bivalvia
- Cardiida
- Tellinidae
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Tellina informal sp. 1
Linnaeus 1758
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Tellina informal sp. 2
Linnaeus 1758
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Bivalvia
- Cardiida
- Veneridae
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Chione darwini
(Philippi 1887)
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replaced by Ameghinomya darwini | |||||||
Chione argentina
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Chione patagonica
(Philippi 1887)
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Dosinia aff. meridionalis
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? Eurhomalea navidadiformis
Frassinetti and Covacevich 1999
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Bivalvia
- Pholadida
- Pholadidae
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Pholadidea patagonica
(Philippi 1887)
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Bivalvia
- Solenida
- Solenidae
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Solena sp.
Mörch 1853
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Bivalvia
- Hiatellida
- Hiatellidae
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Panopea sp.
(Menard 1807)
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Panopea bagualesia
(Ihering 1907)
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Panopea nucleus
(Ihering 1899)
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Bivalvia
- Pholadomyida
- Pholadomyidae
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Pholadomya (Bucardiomya) sp.
(Rollier 1912)
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Bivalvia
- Carditida
- Carditidae
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Cardiocardita inaequalis
(Philippi 1887)
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Pleuromeris elegantoides
(Ortman 1902)
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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: | 78425 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
Created: | 2008-02-06 17:32:13 | Last modified: | 2013-11-25 13:37:23 |
Access level: | authorizer only | Released: | 2009-02-06 17:32:12 |
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] |