Toro Toro Formation
Stratigraphic range: Late Campanian
~80–71 Ma

PreЄ

Dinosaur ichnofossils in the Toro Toro Formation

Type| Geological formation
Unit of| Puca Group
Lithology
Primary| Sandstone
Other| Mudstone, gypsum
Location
Coordinates|  [ ⚑ ] : 18°06′S 65°48′W﻿ / ﻿18.1°S 65.8°W﻿ / -18.1; -65.8
Paleocoordinates|  [ ⚑ ] 21°18′S 47°48′W﻿ / ﻿21.3°S 47.8°W﻿ / -21.3; -47.8
Region| Cochabamba Department
Country|  Bolivia
Extent| Potosí Basin
Type section
Named for| Torotoro National Park

Toro Toro Formation (Bolivia)

The Toro Toro Formation is a Late Campanian geologic formation pertaining to the Puca Group of central Bolivia. The porous yellowish medium-to-coarse grained ferruginous (iron-containing) sandstones and mudstones with gypsum intercalations, deposited in a beach environment, preserve many ichnofossils of Ligabueichnium bolivianum, Dromaeopodus sp.,[1] Ornithopoda indet., Theropoda indet. and Titanosauridae indet.[2] The formation has provided the earliest known tracksite of dinosaurs in Bolivia.[3] The Toro Toro Formation represents part of the postrift stage in an alluvial to deltaic environment within the Potosí Basin. The formation is a local equivalent of the Chaunaca Formation.[4] The most famous of the dinosaur tracksites is Cal Orcko, however these are in the El Molino Formation

## See also

* List of fossiliferous stratigraphic units in Bolivia
* List of stratigraphic units with dinosaur tracks
* List of stratigraphic units with theropod tracks
* Cajones Formation
* La Puerta Formation

## References

1. ↑ Apesteguía et al., 2011, p.663
2. ↑ Toro Toro, Pista de Danzas at Fossilworks.org
3. ↑ Lockley et al., 2002, p.389
4. ↑ Apesteguía et al., 2011, p.662

### Bibliography

* Apesteguía, Sebastián; Silvina De Valais; Giovanni Ríos Cordero, and Omar Medina Ramírez. 2011. New Ichnological Record from the Late Campanian Toro Toro Formation at Toro Toro, Potosí (bolivia): First probable Dromaeosaurid Tracks from South America. Ameghiniana 48\. 662–667. Accessed 2019-03-03.
* Lockley, M.G.; 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. Accessed 2019-03-03.

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