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

Toro Toro Formation
Stratigraphic range: Late Campanian
~80–71 Ma
Dinosaur ichnofossils in the Toro Toro Formation
TypeGeological formation
Unit ofPuca Group
Lithology
PrimarySandstone
OtherMudstone, gypsum
Location
Coordinates18°06′S 65°48′W / 18.1°S 65.8°W / -18.1; -65.8
Approximate paleocoordinates21°18′S 47°48′W / 21.3°S 47.8°W / -21.3; -47.8
RegionCochabamba Department
Country Bolivia
ExtentPotosí Basin
Type section
Named forTorotoro National Park
Toro Toro Formation is located in Bolivia
Toro Toro Formation
Toro Toro Formation (Bolivia)

See also

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References

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  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

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  • 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