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	18°06′S65°48′W / 18.1°S 65.8°W / -18.1; -65.8
Approximate paleocoordinates	21°18′S47°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; 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" (PDF), Cretaceous Research , 23 (3): 383–400, Bibcode:2002CrRes..23..383L, doi:10.1006/cres.2002.1006