Lane to Rincon de Giloca: Kimmeridgian - Tithonian, Uruguay
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Testudines
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Tacuarembemys kusterae n. gen., n. sp.
Perea et al. 2014
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1 individual | |||||||||
| MGT-1185, which consists of an external partial mold of carapace that preserves the morphology of some scales: vertebrals 1–3 and the anterior part of vertebral 4; marginals 1–3; one pair of supernumerary anterior scutes; and medial portion of pleurals 1–3. It also preserves the morphology of some plates: the nuchal, peripherals 1–4 (partially), neurals 1–6, and costals 1–5. Holotype also includes two partial costal plates, one neural plate, and several shell bone fragments. Positive and negative casts of the holotype are deposited at Facultad de Ciencias, Uruguay, as FC-DPV-2761. | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Uruguay | State/province: | Tacuarembó |
| Coordinates: | 31.7° South, 56.0° West (view map) | ||
| Paleocoordinates: | 29.1° South, 20.0° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | small collection |
Time
| Period: | Jurassic | Epoch: | Late/Upper Jurassic |
| Key time interval: | Kimmeridgian - Tithonian | Trilobite zone: | Priohybodus arambourgi |
| Age range of interval: | 154.80000 - 145.00000 m.y. ago |
Stratigraphy
| Formation: | Tacuarembó | Member: | Batoví |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | sandstone |
| Includes fossils? | Y |
| Lithology description: Fine-grained, pink-yellowish sandstones of mainly quartz composition. Bioturbation is common in the vicinity of the outcrop | |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | mesofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Museo de Geociencias de Tacuarembo, Tacuarembo, Uruguay.
A sandstone block containing the fossil was isolated from the rock and protected by a plaster jacket. Then, the mold was prepared under a binocular microscope and completely reinforced with cyanoacrylate. A computed tomography analysis was made so as to reject or confirm the presence of bones potentially included in the sandstone block. Standard petrographic thin-sections of shell bone samples were prepared for histological analysis. The shell surface pattern was analyzed using a JSM-5900 LV scanning electron microscope (SEM). | |
Metadata
| Database number: | 163895 | ||
| Authorizer: | P. Mannion | Enterer: | J. Tennant |
| Modifier: | G. Varnham | Research group: | vertebrate |
| Created: | 2014-11-19 10:05:58 | Last modified: | 2022-05-09 06:31:07 |
| Access level: | the public | Released: | 2014-11-19 10:05:58 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 53512. | D. Perea, M. Soto, J. Sterli, V. Mesa, P. Torino, G. Roland, and J. Da Silva. 2014. Tacuarembemys kusterae, gen. et sp. nov., a new Late Jurassic-?earliest Cretaceous continental turtle from western Gondwana. Journal of Vertebrate Paleontology 34(6):1329-1341 [P. Mannion/J. Tennant/P. Mannion] |