Toro Toro Formation
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| Toro Toro Formation | |
|---|---|
| Stratigraphic range: Late Campanian ~ | |
 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 |
| Approximate paleocoordinates | 21°18′S 47°48′W / 21.3°S 47.8°W |
| 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