Gasema, near Cerro Zeballos, LIEB-PV 5514, 5516, 5519, 5520, 5521, 5526, 5544, 5: Middle Miocene, Argentina
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Sparassodonta
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Pseudonotictis chubutensis n. sp.
Martín and Tejedor 2007
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Martín and Tejedor 2007 | |||||||||
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Reptilia
- Testudines
- Testudinidae
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Chelonoidis gringorum
(Simpson 1942)
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| LIEB-PV 5514, 5516, 5519, 5520, 5521, 5526, 5544, 5545 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Argentina | State/province: | Chubut |
| Coordinates: | 42.6° South, 70.3° West (view map) | ||
| Paleocoordinates: | 43.1° South, 66.2° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5 | ||
| Key time interval: | Middle Miocene | Mammal zone: | Colloncuran |
| Age range of interval: | 15.98000 - 11.63000 m.y. ago |
Stratigraphy
| Formation: | Collon Cura | ||||
| Stratigraphy comments: In general terms, in the area of study the Collón Curá Formation (middle Miocene) overlies conformably and unconformably the La Pava (late lower Miocene) Formation and is unconformably overlaid by the Río Negro Formation (Miocene-Pliocene). |
Lithology and environment
| Primary lithology: | volcaniclastic sandstone |
| Includes fossils? | Y |
| Lithology description: In this area the Collón Cura Formation is characterized as a sequence with predominance of yellowish, light gray and green tufts, sometimes with intercalations of calcareous sandstones in fine brown benches, banks of gray tufts, friable arcilites, light gray and, to a lesser extent, conglomerate fine, yellow and gray sandstones. The specimens of turtles collected in this locality come from fluvial levels with significant proportions of pyroclastic material and are tentatively correlated with the Lower Section of Bilmes et al. (2014). | |
| Environment: | fluvial-lacustrine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | surface (in situ),field collection,observed (not collected) |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: LIEB-PV, Laboratorio de Investigaciones en Evolución y Biodiversidad, Facultad de Ciencias Naturales sede Esquel, Universidad Nacional de la Patagonia “San Juan Bosco”, Esquel, Chubut province, Argentina | |
Metadata
| Also known as: | Gasema | ||
| Database number: | 186561 | ||
| Authorizer: | E. Vlachos, M. Uhen | Enterer: | E. Vlachos, O. Alfaro |
| Modifier: | E. Vlachos | ||
| Created: | 2017-06-26 08:00:10 | Last modified: | 2019-10-31 14:30:07 |
| Access level: | the public | Released: | 2017-06-26 08:00:10 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 62539. | C. Oriozabala, J. Sterli, and L. Gonzalez Ruiz. 2018. Morphology of the mid-sized tortoises (Testudines: Testudinidae) from the Middle Miocene of Northwestern Chubut. Ameghiniana 55(1):30-54 [E. Vlachos/E. Vlachos/E. Vlachos] |
Secondary references:
| 83122 | G. M. Martín and M. F. Tejedor. 2007. Nueva especie de Pseudonotictis Ameghino (Metatheria, Sparassodonta, Hathliacynidae) del Mioceno medio de Chubut noroccidental, Argentina. Ameghiniana 44(4):747-750 [M. Uhen/O. Alfaro/M. Uhen] |