Humaca tracksite (SM14): Campanian, Bolivia
collected by D. Keremba Mamami, V. M. Rial Cez, C. Meyer, M. Lockley 1995, 1998
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Reptilia
- Titanosauridae
|
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| 11 individuals | ||||||||||
| trackways (306 total tracks) | ||||||||||
| Lockley et al. 2002 | ||||||||||
|
Reptilia
- Theropoda
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| 21 specimens | ||||||||||
| tracks | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Bolivia | State/province: | Chuquisaca |
| Coordinates: | 19.1° South, 65.5° West (view map) | ||
| Paleocoordinates: | 20.9° South, 42.4° West (Wright 2013) | ||
| Basis of coordinate: | stated in text | ||
| Altitude: | 2856 meters | ||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
| Key time interval: | Campanian | ||
| Age range of interval: | 83.6 - 72.2 m.y. ago |
Stratigraphy
Lithology and environment
| Primary lithology: | fine,brown silty sandstone |
| Includes fossils? | Y |
| Lithology description: "The track-bearing layer is a fine grained, brownish sandstone" | |
| Environment: | fluvial indet. |
| Geology comments: "Perennial to ephemeral lacustrine shorelines"; "fluvial origin" for the track layer (Meyer et al., 2021) | |
Taphonomy
| Modes of preservation: | trace |
| Degree of concentration: | -single event |
| Size of fossils: | macrofossils |
| Spatial orientation: | preferred |
| Preservation of anatomical detail: | medium |
| Associated major elements: | many |
| Disassociated 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: | taxonomic analysis | ||
| Collectors: | D. Keremba Mamami, V. M. Rial Cez, C. Meyer, M. Lockley | Collection dates: | 1995, 1998 |
| Collection method comments: Site was discovered in 1995 by a group of amateurs including David Keremba Mamani and Vicente Manuel Rial Cez. The track-bearing part that has been mapped has a surface of about 750 m2 and yields a total of 327 individual footprints. | |||
Metadata
| Also known as: | Ore-Pájla | ||
| Database number: | 36232 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2004-01-19 15:09:44 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2004-01-19 15:09:44 |
| Creative Commons license: | CC0 | ||
Reference information
Primary reference:
| 82631. | C. A. Meyer, D. Hippler, and M. G. Lockley. 2001. The Late Cretaceous vertebrate ichnofacies of Bolivia – facts and implications. VII International Symposium on Mesozoic Terrestrial Ecosystems. Asociación Paleontológica Argentina Publicación Especial 7:133-138 [M. Carrano/M. Carrano] |
Secondary references:
| 76344 | C. Cónsole-Gonella, S. de Valais, R. A. Marquillas and M. Cristina Sánchez. 2017. The Maastrichtian–Danian Maimará tracksite (Yacoraite Formation, Salta Group), Quebrada de Humahuaca, Argentina: environments and ichnofacies implications. Palaeogeography, Palaeoclimatology, Palaeoecology 468:327-350 [M. Carrano/M. Carrano] | |
| 9715 | M. G. Lockley, A. S. Schulp, C. A. Meyer, G. Leonardi, and D. K. Mamani. 2002. Titanosaurid trackways from the Upper Cretaceous of Bolivia: evidence for large manus, wide-gauge locomotion and gregarious behaviour. Cretaceous Research 23:383-400 [M. Carrano/M. Carrano/M. Carrano] | |
| 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] | |
| 83929 | K. Niu and L. Xing. 2023. The first dinosaur track assemblages from the Upper Cretaceous Shaxian Formation, Fujian Province, southeastern China. Cretaceous Research 146 [M. Carrano/M. Carrano] | |
| 55488 | M. Romano, M. A. Whyte, and S. J. Jackson. 2007. Trackway ratio: A new look at trackway gauge in the analysis of quadrupedal dinosaur trackways and its implications for ichnotaxonomy. Ichnos 14(3–4):257-270 [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] |