Confluence of the Laguna and Casa Grande Rivers, Mina Aguilar: Ypresian, Argentina
collected by J. Fernández
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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Sebecosuchia indet.
(Colbert 1946)
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1 specimen | |||||||||
| MLP 72-IV-4-18 (anterior caudal vertebra) | ||||||||||
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Reptilia
- Sebecidae
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Ayllusuchus fernandezi n. gen., n. sp.
Gasparini 1984
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1 specimen | |||||||||
| MLP 72-IV-4-2 - holotype (snout and posterior part of skull) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Argentina | State/province: | Jujuy |
| Coordinates: | 23.3° South, 65.6° West (view map) | ||
| Paleocoordinates: | 25.8° South, 54.9° West | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Eocene |
| Stage: | Ypresian | 10 m.y. bin: | Cenozoic 2 |
| Key time interval: | Ypresian | Mammal zone: | Vacan |
| Age range of interval: | 56.00000 - 47.80000 m.y. ago |
Stratigraphy
| Geological group: | Salta | Formation: | Lumbrera | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Lumbrera Formation, below Faja Verde Inferior = Lower Lumbrera assemblage, Vacan SALMA (subdivision of Casamayoran)
Fernicola et al. 2021 obtained an 238U-206Pb isochron age of 46.2 +/- 7.3 Ma for samples from the Lower Lumberer Fm, suggesting that the Lower section of the formation was deposited between 55–46Ma. | |||||
Lithology and environment
| Primary lithology: | not reported |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | MLP |
| Collectors: | J. Fernández |
| Collection method comments: Museo de La Plata collection | |
Metadata
| Database number: | 92655 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy |
| Modifier: | G. Varnham | Research group: | vertebrate |
| Created: | 2009-11-23 10:00:05 | Last modified: | 2022-02-04 04:05:42 |
| Access level: | the public | Released: | 2009-11-23 10:00:05 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 31227. | Z. Gasparini. 1984. New Tertiary Sebecosuchia (Crocodylia: Mesosuchia) from Argentina. Journal of Vertebrate Paleontology 4(1):85-95 [J. Alroy/J. Alroy] |
Secondary references:
| 58261 | J. E. Powell, M. J. Babot, D. A. García López, M. V. Deraco, and C. Herrera. 2011. Eocene vertebrates of northwest Argentina: annotated list. In J. Salfity, R. A. Marquillas (eds.), Cenozoic Geology of the Central Andes of Argentina 349-370 [J. Zijlstra/J. Zijlstra/J. Zijlstra] |