Gaiman (marine vertebrates): Aquitanian, Argentina
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Spheniscidae
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Palaeospheniscus antarcticus
Moreno and Mercerat 1891
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Simpson 1946 | ||||||
| recombined as Paraptenodytes antarcticus | |||||||
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Reptilia
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Microdytes tonnii
Simpson 1981
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Simpson 1981 | 1 specimen | |||||
| recombined as Eretiscus tonnii | |||||||
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Palaeospheniscus wimani
(Ameghino 1905)
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Simpson 1972 | ||||||
| synonym of Chubutodyptes biloculata | |||||||
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Reptilia
- Anseriformes
- Anatidae
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Cayaoa bruneti
Tonni 1979
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Noriega and Tambussi 2008 | ||||||
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Mammalia
- Carnivora
- Phocidae
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Phocidae indet.
(Gray 1821)
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Cozzuol 1991 | 1 specimen | |||||
| original and current combination Phocadae | |||||||
| see common names | |||||||
Geography
| Country: | Argentina | State/province: | Chubut |
| Coordinates: | 43.3° South, 65.5° West (view map) | ||
| Paleocoordinates: | 44.1° South, 58.9° West | ||
| Basis of coordinate: | estimated from map |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Aquitanian | 10 m.y. bin: | Cenozoic 5 |
| Key time interval: | Aquitanian | ||
| Age range of interval: | 23.03000 - 20.44000 m.y. ago |
Stratigraphy
| Formation: | Gaiman | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: JA: marine fossils are from a single "marine bed" in an unnamed member of the Gaiman Formation that is Aquitanian and overlies the Trelew Member, which includes Colhuehuapian terrestrial vertebrates (Kay et al. 2008) | |||||
Lithology and environment
| Primary lithology: | tuffaceous lithified muddy sandstone |
| Lithology description: JA: shown in a column by Kay et al. (2008) as being from a tuffaceous muddy sandstone that does not include concretions and is presumably lithified | |
| Environment: | marginal marine indet. |
| Geology comments: JA: presumably nearshore marine based on immediately overlying fully terrestrial unit with a conformable contact | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | MACN |
Metadata
| Database number: | 142513 | ||
| Authorizer: | J. Alroy, M. Uhen | Enterer: | J. Alroy, M. Uhen |
| Modifier: | M. Uhen | Research group: | vertebrate |
| Created: | 2013-04-12 13:33:39 | Last modified: | 2023-01-03 08:24:38 |
| Access level: | the public | Released: | 2013-04-12 13:33:39 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 36733. | R. J. Asher and K. M. Helgen. 2010. Nomenclature and placental mammal phylogeny. BMC Evolutionary BIology 10(102):1-9 [M. Uhen/M. Uhen] |
Secondary references:
| 4525 | ETE 161 | R. S. De Mendoza and C. P. Tambussi. 2019. Cayaoa bruneti (Aves: Anseriformes) from the Early Miocene of Patagonia, Argentina: New Materials and Revised Diagnosis. Ameghiniana 56(3):213-227 [W. DiMichele/W. DiMichele/M. Uhen] |
| 32175 | J. I. Noriega and C. P. Tambussi. 2008. New material of Cayaoa bruneti TONNI, an Early Miocene anseriform (Aves) from Patagonia, Argentina. Neues Jahrbuch für Geologie und Paläontologie 249(3):271-280 [M. Uhen/S. Tucker/M. Uhen] |