Estancia Busnadiego - Chenque Fm: Early/Lower Miocene, Argentina
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Lahilla patagonica
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Gastropoda
- Epitoniidae
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Cirsotrema rugulosa
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Gastropoda
- Turritellidae
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"Turritella" ambulacrum
Sowerby 1846
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"Turritella" aff. rustica
Uliana and Camacho 1975
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Gastropoda
- Neotaenioglossa
- Calyptraeidae
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"Calyptraea" pileus
Lamarck 1822
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Gastropoda
- Ficidae
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Ficula cf. distans
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| synonym of Ficus | |||||||
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Gastropoda
- Struthiolariidae
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Antarctodarwinella iheringi
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Struthiolarella ornata
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Gastropoda
- Neogastropoda
- Muricidae
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Trophon santacrucensis
Ihering 1897
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Gastropoda
- Neogastropoda
- Buccinidae
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Penion subrecta
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Gastropoda
- Naticidae
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"Polynices" secunda
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| original and current combination Polinices | |||||||
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Gastropoda
- Tegulidae
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Tegula (Tegula) jeguaensis
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Bivalvia
- Ostreida
- Ostreidae
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Cubitostrea sp.
Sacco 1897
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Crassostrea hatcheri
(Ihering 1899)
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Bivalvia
- Ostreida
- Pinnidae
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Pinna (Atrina) magellanica
Ihering 1907
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Bivalvia
- Pectinida
- Pectinidae
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"Chlamys" jorgensis
(Ihering 1907)
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| recombined as Chlamys (Zygochlamys) jorgensis | |||||||
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Zygochlamys geminatus
(Sowerby 1846)
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| recombined as Zygochlamys geminata | |||||||
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Bivalvia
- Arcida
- Cucullaeidae
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Cucullaea (Monteleonia) alta
Sowerby 1846
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Bivalvia
- Arcida
- Glycymerididae
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Glycymerita camaronesia
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Bivalvia
- Lucinida
- Lucinidae
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Pteromyrtea crucialis
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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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Ameghinomya argentina
Ihering 1897
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Ameghinomya meridonalis
(Sowerby 1846)
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Dosinia meridonalis
Ihering 1897
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Austrocallista iheringi
(Cossmann 1898)
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Bivalvia
- Hiatellida
- Hiatellidae
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Panopea regularis
(Ortmann 1900)
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| recombined as Panopea (Panopea) regularis | |||||||
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Bivalvia
- Solenida
- Solenidae
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Solen (Eosolen) crucis
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| original and current combination Solena (Eosolen) | |||||||
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Bivalvia
- Carditida
- Crassatellidae
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Crassatella kokeni
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Bivalvia
- Carditida
- Carditidae
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Venericor sp.
(Stewart 1930)
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| original and current combination Venericardia (Venericor) | |||||||
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Venericor abasolensis
Camacho and Fernández 1956
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| synonym of Neovenericor austroplata | |||||||
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Venericor austroplata
Gardner and Bowles 1939
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| synonym of Neovenericor austroplata | |||||||
| see common names | |||||||
Geography
| Country: | Argentina |
| Coordinates: | 45.3° South, 69.0° West (view map) |
| Paleocoordinates: | 46.1° South, 62.8° West |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | local area |
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: | Chenque | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From upper beds of the Chenque Fm. THICKNESS: From multiple beds within formation that reaches a thickness of ~100 m. AGE: Early Middle Miocene according to molluscan biostratigraphy. Assigned to the Middle Miocene based on the the recognition of the NVG assemblage. STRATIGRAPHIC POSITION: From two beds, 30 m apart, in the uppermost part of the formation. | |||||
Lithology and environment
| Primary lithology: | poorly lithified sandstone |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Sandstone. LITHIFICATION: Poorly-lithified on the basis of figured specimens. | |
| Environment: | coastal indet. |
| Geology comments: ENVIRONMENT: Environmental data not reported in text. Siliciclastic shallow marine assemblage. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection,survey of museum collection |
| Reason for describing collection: | biostratigraphic analysis |
| Collection method comments: COLLECTOR: List includes both new collections by the author, and examination of museum and previously reported taxa. REPOSITORY: Museo Argentino de Ciencias Naturales Bernadino Rivadavia, Buenos Aires, Argentina. | |
| Taxonomic list comments:COVERAGE: Exhaustive for bivalvia and gastropoda. NOMENCLATURE: Not an authoritaive publication, but providing revised generic placement for many previously reported antiquated names. | |
Metadata
| Database number: | 71428 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2007-04-25 06:45:38 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | authorizer only | Released: | 2008-04-25 06:45:38 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 12860. | C. J. del Rio. 2004. Tertiary Marine Molluscan Assemblages of Eastern Patagonia (Argentina): A Biostratigraphic Analysis. Journal of Paleontology 78(6):1097-1122 [L. Ivany/P. Wall/P. Wall] |