The Coli Toro Formation is a Maastrichtian-Danian geological formation in Argentina. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607. The rocks of the formation were deposited in a marine environment, in opposition to the marginal underlying sedimentary environment.
The formation in later publications has been reassigned as the Coli Toro Member at the basal levels of the Los Alamitos Formation, containing fossil remains of Sulcusuchus erraini.Cari-Laufqen Grande Pond at Fossilworks.org The formation partly overlies the Angostura Colorada Formation.Ottone, 2009, p.377
Fossil content +Dinosaurs from the Coli Toro FormationGenusSpeciesLocationStratigraphic PositionMaterialNotesImagesHadrosauridae indet.IndeterminateCerro YesoIsolated caudal vertebraeIndeterminate hadrosaurid ornithopodTitanosauria indet.IndeterminateCerro YesoA tooth (MHJG-NCP, formerly 5/4/7-3)Indeterminate titanosaurian sauropodAbelisauridae indet.IndeterminateEstancia YuquincheA tooth (MHJG-NCP 299)The first theropod from the Coli Toro Formation +Other reptiles from the Coli Toro FormationGenusSpeciesLocationStratigraphic PositionMaterialNotesImagesPeirosauridae indet.?IndeterminateCerro YesoA tooth (MHJG Pa 614 106)An indeterminate crocodyliform tooth, probably belonging to the notosuchian family Peirosauridae.SulcusuchusS. errainiCerro Yeso and near Laguna Cari-Laufquén GrandeTeeth (Cerro Yeso) and a fragmentary mandibular ramus (Laguna Cari-Laufquén Grande)The only named polycotylid plesiosaur from the Southern Hemisphere, and the most recent one worldwide. Also found in La Colonia Formation.Testudines indet.IndeterminateCerro YesoTurtle plates are reportly commonly found in the Cerro Yeso locality +FIsh from the Coli Toro FormationGenusSpeciesLocationStratigraphic PositionMaterialNotesImagesMetaceratodus?IndeterminateCerro YesoDental platesA lungfish
See also
Angostura Colorada Formation La Colonia Formation Los Alamitos Formation Allen Formation Jaguel Formation Chorrillo Formation Calafate Formation El Molino Formation Yacoraite Formation Vilquechico Formation Serra da Galga Formation List of dinosaur-bearing rock formations List of stratigraphic units with indeterminate dinosaur fossils
References
Bibliography
Further reading
R. M. Casamiquela. 1964. Sobre un dinosaurio hadrosáurido de la Argentina. Ameghiniana 3(9):285-312 J. O'Gorman and Z. Gasparini. 2013. Revision of Sulcusuchus erraini (Sauropterygia, Polycotylidae) from the Upper Cretaceous of Patagonia, Argentina. Alcheringa 37(2):163-176