Agua de las Avispas, Cerro Cachueta: Carnian, Argentina
collected 1958–
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Dipnoi
- Ptychoceratodontidae
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Ptychoceratodus cuyanus n. sp.
Agnolin et al. 2017
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Agnolin et al. 2017 | 1 specimen | ||||||||
| IANIGLA-PV 415 | ||||||||||
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Insecta
- Odonata
- Triassolestidae
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Triassothemis mendozensis n. gen., n. sp.
Carpenter 1960
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Carpenter 1960 | 1 specimen | ||||||||
| MACN 18040 (1 measurement) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Argentina |
| Coordinates: | 33.1° South, 69.1° West (view map) |
| Paleocoordinates: | 49.7° South, 34.8° West |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Triassic | Epoch: | Late Triassic |
| Stage: | Carnian | 10 m.y. bin: | Triassic 3 |
| Key time interval: | Carnian | ||
| Age range of interval: | 237 - 227 m.y. ago |
Stratigraphy
| Geological group: | Uspallata | Formation: | Potrerillos |
Lithology and environment
| Primary lithology: | white "shale" | ||
| Lithology description: "The Potrerillos Formation is composed of thick, coarse conglomerates at its base and by thinner conglomerates, sandstones, bentonites, mudstones, and carbonaceous shales in the middle and upper part of the unit. It represents a mix of braided-river channels, floodplain deposits, and high-sinuosity meandering channels." Martins-Neto et al., 2007 Insects come from the upper part of the formation | |||
| Environment: | fluvial indet. | Tectonic setting: | rift |
| Geology comments: The Cuyo Basin may be characterised as a passive rift basin produced as a result of generalised extension induced by crustal thinning and collapse of the Upper Palaeozoic (Gondwana) orogen (Llambías and Sato, 1990, 1995; Spalletti, 1999). It can be defined as a half graben that shows strong asymmetric structural and depositional features, as well as intrabasinal highs or transference zones that delimit different depocentres (Kokogián et al., 1988, 1993; Ramos and Kay, 1991; López Gamundí, 1994; Spalletti, 1999, 2001). | |||
Taphonomy
| Modes of preservation: | mold/impression |
| Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
| Collection methods: | selective quarrying,surface (in situ),field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | MACN | Collection dates: | 1958– |
| Collection method comments: specimens housed in MACN
"The fossil insect described in this paper was collected in I958 in the precordilleran region of Mendoza in Argentina by the joint expedition of the Museum of Comparative Zoology and the Museo Argentino de Ciencias Naturales of Buenos Aires. The specimen was turned over to me for study by a member of the expedition, Professor Bryan Patterson." Carpenter, 1960 | |
Metadata
| Database number: | 123008 | ||
| Authorizer: | M. Clapham, M. Carrano | Enterer: | J. Karr, M. Carrano |
| Modifier: | M. Carrano | Research group: | paleoentomology |
| Created: | 2012-01-10 05:41:58 | Last modified: | 2019-04-08 15:55:19 |
| Access level: | the public | Released: | 2012-01-10 05:41:58 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 39201. | R. G. Martins-Neto, O. F. Gallego, and R. N. Melchor. 2003. The Triassic insect fauna from South America (Argentina, Brazil and Chile): a checklist (except Blattoptera and Coleoptera) and descriptions of new taxa. Acta Zoologica Cracoviensia 46(Suppl):229-256 [M. Clapham/J. Karr/M. Clapham] |
Secondary references:
| 66181 | F. L. Agnolin, S. Bogan, F. Brissón Egli, F. E. Novas, M. P. Isasi, C. Marsicano, A. M. Zavattieri and A. Mancuso. 2017. A new lungfish (Dipnoi) from the Late Triassic of South America. Journal of Vertebrate Paleontology 37(1):e1245665 [G. Lloyd/G. Lloyd/O. Alfaro] | |
| 39346 | F. M. Carpenter. 1960. A Triassic Odonate from Argentina. Psyche 67:71-75 [M. Clapham/J. Karr] |