Quebrada de la Escalera, Valle del Tonco tracksite: Late/Upper Maastrichtian, Argentina
collected by M. Raskovski, R. N. Alonso 1968, 1978

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
Sauropoda indet. (Marsh 1878)
Meyer et al. 2018 1 specimen
Hadrosaurichnus australis n. gen., n. sp. Alonso 1980
4 individuals
nomen dubium belonging to Hadrosaurichnus
trackways, CNSV 10.020
Reptilia - Avetheropoda
Carnosauria indet. Huene 1920
Alonso 1989 1 individual
informally called "Sirollichnus argentinensis" in Leonardi 1994
see common names

Geography
Country:Argentina State/province:Salta County:San Carlos
Coordinates: 25.4° South, 66.0° West (view map)
Paleocoordinates:27.9° South, 52.6° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Maastrichtian 10 m.y. bin:Cretaceous 8
Key time interval:Late/Upper Maastrichtian
Age range of interval:72.10000 - 66.00000 m.y. ago
Stratigraphy
Geological group:Salta Formation:Yacoraite Member:Caliza Amblayo
Stratigraphic resolution:bed
Stratigraphy comments: lower part of formation, Balbuena Subgroup
Lithology and environment
Primary lithology:desiccation cracks,wave ripples,deformed bedding,ooidal,yellow grainstone
Includes fossils?Y
Lithology description: "Lithologically it is composed of limestones, sandy limestones, arenaceous limestones and pelites. The limestones are mostly oolitic and stromatolitic. The color of the group is yellow...There are abundant sedimentary structures such as ripples, dessication cracks, stromatolites, intraformational folds, and load marks...The track-bearing layer is an oolitic calcarenite."
Environment:carbonate indet.
Geology comments: described as "tidal flat" and "supratidal"
Taphonomy
Modes of preservation:mold/impression,trace
Size of fossils:macrofossils
Spatial orientation:life position
Preservation of anatomical detail:good
Associated major elements:all
Temporal resolution:snapshot
Spatial resolution:autochthonous
Collection methods and comments
Collection methods:surface (in situ),observed (not collected)
Reason for describing collection:taxonomic analysis
Collectors:M. Raskovski, R. N. Alonso Collection dates:1968, 1978
Metadata
Also known as:Leonardi locality 21
Database number:45096
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:P. Mannion Research group:vertebrate
Created:2004-10-05 14:36:34 Last modified:2021-04-15 10:03:07
Access level:the public Released:2004-10-05 14:36:34
Creative Commons license:CC BY
Reference information

Primary reference:
11748.ETE R. N. Alonso. 1980. Icnitas de dinosaurios (Ornithopoda, Hadrosauridae) en el Cretácico superior del norte de Argentina[Dinosaurian ichnites (Ornithopoda, Hadrosauridae) in the Late Cretaceous of northern Argentina]. Acta Geologica Lilloana 15(2):55-63 [M. Carrano/M. Carrano/M. Carrano]

Secondary references:

55943 R. N. Alonso. 1986. In D. D. Gillette and M. G. Lockley (eds.), First International Symposium on Dinosaur Tracks and Traces, Abstracts with Program 12 [M. Carrano/M. Carrano]
59785% 21040R. N. Alonso. 1989. Late Cretaceous dinosaur trackways in northern Argentina. In D. D. Gillette and M. G. Lockley (eds.), Dinosaur Tracks and Traces. Cambridge University Press, Cambridge 223-228 [M. Carrano/M. Carrano/M. Carrano]
76344 C. Cónsole-Gonella, S. de Valais, R. A. Marquillas and M. Cristina Sánchez. 2017. The Maastrichtian–Danian Maimará tracksite (Yacoraite Formation, Salta Group), Quebrada de Humahuaca, Argentina: environments and ichnofacies implications. Palaeogeography, Palaeoclimatology, Palaeoecology 468:327-350 [M. Carrano/M. Carrano]
32443ETE E. Jaillard, H. Cappetta, P. Ellenberger, M. Feist, N. Grambast-Fessard, J. P. Lefranc, and B. Sigé. 1993. Sedimentology, palaeontology, biostratigraphy and correlation of the Late Cretaceous Vilquechico Group of southern Peru. Cretaceous Research 14:623-661 [M. Carrano/M. Carrano/M. Carrano]
62875 G. Leonardi. 1981. As localidades com rastros fósseis de tetrápodes na América Latina [Localities with fossil tetrapod tracks in Latin America]. In Y. T. Sanguinetti (ed.), Anais II Congresso Latino-Americano de Paleontologia 2:929-940 [M. Carrano/M. Carrano]
59104 G. Leonardi. 1989. Inventory and statistics of the South American dinosaurian ichnofauna and its paleobiological interpretation. In D. D. Gillette & M. G. Lockley (ed.), Dinosaur Tracks and Traces 165-178 [M. Carrano/M. Carrano]
14677ETE G. Leonardi. 1994. Annotated Atlas of South America Tetrapod Footprints (Devonian to Holocene) with an Appendix on Mexico and Central America. . República Federativa do Brasil, Ministério de Minas e Energia, Secretaria de Minas e Metalurgia, Companhia de Pesquisa de Recursos Minerais, Brasília 1-248 [M. Carrano/K. Maguire/E. Dunne]
34281ETE M. G. Lockley. 1992. Cretaceous dinosaur-dominated footprints assemblages: their stratigraphic and palaeoecological potential. In N. J. Mateer & P.-J. Chen (ed.), Aspects of Nonmarine Cretaceous Geology. China Ocean Press, Beijing 269-282 [M. Carrano/M. Carrano]
76343 C. A. Meyer, D. Marty, and M. Belvedere. 2018. Titanosaur trackways from the Late Cretaceous El Molino Formation of Bolivia (Cal Orck’o, Sucre). Annales Societatis Geologorum Poloniae 88:223-241 [M. Carrano/M. Carrano]
61518 D. B. Weishampel and J. B. Weishampel. 1983. Annotated localities of ornithopod dinosaurs: implications to Mesozoic paleobiogeography. The Mosasaur 1:43-87 [M. Carrano/M. Carrano]