Rio Gualo (2nd cycle): Carnian, Argentina
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Insecta
- Hemiptera
- Saaloscytinidae
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Saaloscytina carmonae
(Martins-Neto et al. 2006)
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Lara et al. 2021 | 1 specimen | ||||||||
| PULR-I 355 | ||||||||||
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Insecta
- Hemiptera
- Scytinopteridae
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Gualoscytina mayae n. gen., n. sp.
Martins-Neto and Gallego 2003
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Martins-Neto et al. 2003 | 1 specimen | ||||||||
| recombined as Apheloscyta mayae | ||||||||||
| PULR-I 267 (1 measurement) | ||||||||||
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Argentinopheloscyta forsterae n. gen., n. sp.
Martins-Neto and Gallego 2003
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Martins-Neto et al. 2003 | 1 specimen | ||||||||
| recombined as Mesoscytina forsterae | ||||||||||
| PULR-I 268 (1 measurement) | ||||||||||
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Insecta
- Hemiptera
- Corixidae
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Corixidae indet.
Leach 1815
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Lara et al. 2021 | 1 specimen | ||||||||
| PULR-I 349 | ||||||||||
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Insecta
- Hemiptera
- Mesojabloniidae
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Fulgobole arcucciae
(Martins-Neto and Gallego 2001)
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Lara et al. 2021 | 1 specimen | ||||||||
| PULR-I 353 | ||||||||||
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Insecta
- Coleoptera
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Argentinocupes pulcher n. gen., n. sp.
Martins-Neto and Gallego 2006
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1 specimen | |||||||||
| PULR-I 299 (1 measurement) | ||||||||||
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Argentinocupes abdalai n. sp.
Martins-Neto and Gallego 2006
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1 specimen | |||||||||
| PULR-I 310 (1 measurement) | ||||||||||
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Insecta
- Coleoptera
- Ademosynidae
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Ademosyne sp.
Handlirsch 1906
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Gallego 1997 | 10 specimens | ||||||||
| PULR-I 224a, b | ||||||||||
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= Ademosyne arcucciae
Martins-Neto and Gallego 2006
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Martins-Neto et al. 2006 | |||||||||
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Ademosyne punctuada
Martins-Neto and Gallego 2006
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5 specimens | |||||||||
| PULRI 313a, c-e (4 measurements) | ||||||||||
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Insecta
- Coleoptera
- Permosynidae
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? Permosynidae indet.
Tillyard 1924
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3 specimens | |||||||||
| CTES-PZ 7305b, PULR-I 332, 333 | ||||||||||
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Insecta
- Coleoptera
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Cardiosyne obesa
Martins-Neto and Gallego 2006
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1 specimen | |||||||||
| PULR-I 325a (1 measurement) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Argentina | State/province: | La Rioja |
| Coordinates: | 29.9° South, 67.8° West (view map) | ||
| Paleocoordinates: | 46.5° South, 33.2° West | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | outcrop |
Time
| Period: | Triassic | Epoch: | Late/Upper Triassic |
| Stage: | Carnian | 10 m.y. bin: | Triassic 3 |
| Key time interval: | Carnian | ||
| Age range of interval: | 237.00000 - 227.00000 m.y. ago |
Stratigraphy
| Geological group: | Agua de la Peña | Formation: | Los Rastros | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Carnian age based on radiometric constraints from underlying Chañares Formation in Marsicano et al. (2015). | |||||
Lithology and environment
| Primary lithology: | black lithified carbonaceous claystone | ||
| Lithology description: "This facies assemblage is dominated by dark gray to black carbonaceous claystones (Fl) interbedded with iron mudstones and very fine-grained sandstones (SFm) (figures 3, 4). The tabular beds form a laterally persistent succession with thickness that ranges from 2 to 5 m. The claystones are horizontally laminated, and formed by continuous microlamination with different grain sizes." | |||
| Environment: | lacustrine - large | Tectonic setting: | rift |
| Geology comments: "The features observed in the facies assemblage A suggest that it was deposited in a deep off-shore lacustrine depositional environment. The claystones were deposited by suspension in distal-lake conditions…" Mancuso et al., 2007
Ichigualasto–Villa Unión Basin, developed along the western Gondwana margin associated with extension focused along the northwest-trending Paleozoic sutures. This extension originated from the breakup of Pangaea during the end of Permian and start of the Triassic. Synrift phase II - accommodation space generated by tectonic subsidence. | |||
Taphonomy
| Modes of preservation: | mold/impression |
| Size of fossils: | macrofossils,mesofossils |
| Preservation of anatomical detail: | medium |
| Temporal resolution: | snapshot |
Collection methods and comments
| Collection methods: | selective quarrying,field collection,survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Specimens kept in PULR-I – Invertebrate Paleontological Collection, Universidad Nacional de La Rioja, Argentina | |
Metadata
| Database number: | 123047 | ||
| Authorizer: | M. Clapham | Enterer: | J. Karr, M. Clapham |
| Modifier: | M. Clapham | Research group: | paleoentomology |
| Created: | 2012-01-10 12:33:35 | Last modified: | 2015-12-07 16:56:35 |
| Access level: | the public | Released: | 2012-01-10 12:33:35 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 39291. | R. G. Martins-Neto, O. F. Gallego, and A. C. Mancuso. 2006. The Triassic insect fauna from Argentina. Coleoptera from the Los Rastros Formation (Bermejo Basin), La Rioja Province. Ameghiniana 43(3):1-20 [M. Clapham/J. Karr] |
Secondary references:
| 52804 | O. F. Gallego. 1997. Hallazgos de insectos Triásicos en la Argentina. Ameghiniana 34:511-516 [M. Clapham/M. Clapham] | |
| 76210 | M. B. Lara, E. L. Bustos-Escalona, A. C. Mancuso and A. Arcucci. 2021. Upper Triassic hemipterans from the south-western Gondwana: taxonomical, paleobiological, and paleogeographical implications. Journal of South American Earth Sciences 107(103119) [M. Clapham/M. Clapham] |