Toro Toro Formation

Toro Toro Formation
Stratigraphic range: Late Campanian ~80–71 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Dinosaur ichnofossils in the Toro Toro Formation
Type	Geological formation
Unit of	Puca Group
Lithology
Primary	Sandstone
Other	Mudstone, gypsum
Location
Coordinates	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

• 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

• Apesteguía, Sebastián; De Valais, Silvina; Ríos Cordero, Giovanni; Medina Ramírez, Omar (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 (4): 662–667, doi:10.5710/AMGH.v48i4(341), hdl:11336/9519, retrieved 2019-03-03
• Lockley, M.G.; Schulp, A.S.; Meyer, C.A.; Leonardi, G.; Mamani, D.K. (2002), "Titanosaurid trackways from the Upper Cretaceous of Bolivia: evidence for large manus, wide-gauge locomotion and gregarious behaviour", Cretaceous Research, 23 (3): 383–400, Bibcode:2002CrRes..23..383L, doi:10.1006/cres.2002.1006, retrieved 2019-03-03