Toro Toro Formation
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., Ornithopoda indet., Theropoda indet. and Titanosauridae indet. The formation has provided the earliest known tracksite of dinosaurs in Bolivia. 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. 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
- Cajones Formation
- La Puerta Formation
References
- ^ Apesteguía et al., 2011, p.663
- ^ Toro Toro, Pista de Danzas at Fossilworks.org
- ^ Lockley et al., 2002, p.389
- ^ 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