Cape Tres Puntas (CPBA Collection): Chattian, Argentina
collected by H. Camacho 1986, 1988
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Rhynchonellata
- Rhynchonellida
- Notosariidae
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Plicirhynchia plicigera
(Ihering 1897)
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Scaphopoda
- Dentaliida
- Dentaliidae
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Dentalium sp.
Linnaeus 1758
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Gastropoda
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Peonza torquata n. gen., n. sp.
Olivera 1994
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Gastropoda
- Turritellidae
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Turritella sp.
Lamarck 1799
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Gastropoda
- Neogastropoda
- Muricidae
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Trophon sp.
Montfort 1810
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Bivalvia
- Pectinida
- Limidae
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Neoinoceramus ameghinoi
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Bivalvia
- Arcida
- Cucullaeidae
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Cucullaea patagonensis
Erdmann and Morra 1985
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Bivalvia
- Arcida
- Limopsidae
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Limopsis sp.
Sassi 1827
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| see common names | |||||||
Geography
| Country: | Argentina | State/province: | Santa Cruz |
| Coordinates: | 47.1° South, 66.1° West (view map) | ||
| Paleocoordinates: | 48.3° South, 58.2° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Oligocene |
| Stage: | Chattian | 10 m.y. bin: | Cenozoic 4 |
| Key time interval: | Chattian | ||
| Age range of interval: | 27.82000 - 23.03000 m.y. ago |
Stratigraphy
| Formation: | San Julian | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: The specimens of Peonza n. gen. from the Golfo San Jorge basin were obtained in the shell bed at the top of the San Julian Formation. The San Julián Formation has been variously attributed an early Eocene to early Miocene (Panza et al. 1995, Parras & Casadío 2005), or late Eocene to early Oligocene age based on the microfossil fauna (Bertels 1970, 1975, 1979, Náñez 1990, Náñez et al. 2009, Malumián et al. 1998, Malumián 1999). Recently, 87Sr/86Sr isotopic dating yielded a late Oligocene age (Parras & Casadío 2002, Parras et al. 2012). | |||||
Lithology and environment
| Primary lithology: | shelly/skeletal lithified sandstone |
| Lithology description: "Well-cemented shell bed" and medium to coarse fairly consolidated sandstone | |
| Environment: | shoreface |
| Geology comments: Shoreface based on presence of crossbedding and coarse shelly sandstone | |
Taphonomy
| Modes of preservation: | body,coquina,shellbed |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | H. Camacho | Collection dates: | 1986, 1988 |
| Collection method comments: Repository: Catedra de Paleontologia Collection, Universidad de Buenos Aires (CPBA) | |||
Metadata
| Database number: | 205658 | ||
| Authorizer: | M. Clapham | Enterer: | B. Santos |
| Modifier: | B. Santos | Research group: | marine invertebrate |
| Created: | 2019-10-18 02:11:55 | Last modified: | 2019-10-18 13:41:07 |
| Access level: | the public | Released: | 2019-10-18 02:11:55 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 70510. | A. M. Olivera, W. J. Zinsmeister, and S. G. Parma. 1994. Peonza: New Gastropod Genus from the Middle Tertiary of Patagonia and Chile. Journal of Paleontology 68(2):279-286 [M. Clapham/B. Santos/B. Santos] |