Lirio Mayu tracksite (SM2): Coniacian, Bolivia
collected 2015
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Reptilia
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| 8 specimens | ||||||||||
| Meyer et al. 2021 | ||||||||||
| basal titanosaurs | ||||||||||
| 60 specimens | ||||||||||
|
unclassified
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|
Steinichnus sp.
Bromley and Asgaard 1979
|
Meyer et al. 2021 | |||||||||
| see common names | ||||||||||
Geography
| Country: | Bolivia | State/province: | Chuquisaca |
| Coordinates: | 19.0° South, 65.6° West (view map) | ||
| Paleocoordinates: | 20.3° South, 36.0° West (Wright 2013) | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Coniacian | 10 m.y. bin: | Cretaceous 6 |
| Key time interval: | Coniacian | ||
| Age range of interval: | 89.8 - 85.7 m.y. ago |
Stratigraphy
Lithology and environment
| Primary lithology: | desiccation cracks,current ripples,wave ripples,"cross stratification",fine,medium sandstone |
| Includes fossils? | Y |
| Lithology description: "The sedimentary succession consists of medium - to fine-grained reddish sandstones with trough cross bedding. Sandstones are thin-bedded (cm-to dm-scale), coarse to fine-grained, and contain abundant current and wave ripple marks, small-scale cross stratification, mud cracks, and mudstone rip-up clasts." | |
| Environment: | alluvial fan |
| Geology comments: "These features point to deposition in an alluvial plain of a shallow braided river system." | |
Taphonomy
| Modes of preservation: | mold/impression,trace |
| Size of fossils: | macrofossils |
| Spatial orientation: | life position |
| Preservation of anatomical detail: | excellent |
| Associated major elements: | some |
| Temporal resolution: | snapshot |
| Spatial resolution: | autochthonous |
Collection methods and comments
| Collection methods: | surface (in situ),observed (not collected) |
| Reason for describing collection: | general faunal/floral analysis | Collection dates: | 2015 |
| Collection method comments: tracks destroyed during completion of dam | |
Metadata
| Also known as: | Janaj Khuchu, Potolo, Lirio Mayo, Janaj Cucho | ||
| Database number: | 219393 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2021-04-08 20:07:36 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2021-04-08 20:07:36 |
| Creative Commons license: | CC0 | ||
Reference information
Primary reference:
| 76326. | O. Medina. 2016. La pérdida de huellas de dinosaurios por la construcción de una represa en el municipio de Sucre, departamento de Chuquisaca, Bolivia [The loss of dinosaur footprints due to construction of a dam in the Sucre municipality, Chuquisaca department, Bolivia]. XXX Jornadas Argentinas de Paleontología de Vertebrados. Resúmenes. Ameghiniana 53(6 (suppl.)):29 [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
| 76343 | C. A. Meyer, D. Marty, and M. Belvedere. 2018. Titanosaur trackways from the Late Cretaceous El Molino Formation of Bolivia (Cal Orck’o, Sucre). Annales Societatis Geologorum Poloniae 88:223-241 [M. Carrano/M. Carrano] | |
| 76342 | C. A. Meyer, D. Marty, B. Thüring, S. Thüring, and M. Belvedere. 2021. The Late Cretaceous dinosaur track record of Bolivia – review and perspective. Journal of South American Earth Sciences 106:102992 [M. Carrano/M. Carrano] | |
| 76345 | M. Suárez Riglos, R. Céspedes Paz, and O. Medina Ramirez. 2019. Ruta de Migracíon de los Dinosaurios en Bolivia [Migration Route of Dinosaurs in Bolivia] 1-104 [M. Carrano/M. Carrano] |