The Lohan Cura Formation is a geologic formation with outcrops in the Argentine provinces of Río Negro, Neuquén, and Mendoza. It is the second oldest Cretaceous terrestrial formation in the Neuquén Basin.

The Lohan Cura Formation unconformably overlies the terrestrial La Amarga Formation. In some places it also overlies the older marine Agrio and Bajada Colorada Formations of the Mendoza Group through the same Middle Miranican unconformity. It is in turn overlain by the Candeleros Formation of the Neuquén Group, separated by the Main Miranican unconformity. The Lohan Cura correlates with the Rayoso Formation in some areas.Leanza et al., 2004, p.66

Subdivision The Lohan Cura Formation contains two members of roughly equal thickness. The lowermost member, Puesto Quiroga Member is approximately thick. The lowest sediments in this unit are conglomerates, overlain by sandstones and siltstones. The upper two-thirds of the member consists mainly of shales. The Cullín Grande Member is the upper member within the formation, about thick, which contains numerous sandstones displaying evidence of stream channels. Near the top of the sequence, siltstones and claystones become dominant.

Fossil content

Dinosaurs of the Lohan Cura Formation Genus Species Presence Notes Images AgustiniaBonaparte, J.F. 1999. An armoured sauropod from the Aptian of northern Patagonia, Argentina. In: Tomida, Y., Rich, T. H. & Vickers-Rich, P. (Eds.). Proceedings of the Second Gondwanan Dinosaur Symposium Tokyo: National Science Museum Monographs #15. Pp. 1–12. A. ligabuei Neuquén Province Dorsal sacral and caudal neural arches, hindlimb elements, and pelvic fragments (the latter misidentified as osteoderms) Comahuesaurus C. windhauseni Neuquén Province "At least three individuals" Ligabuesaurus L. leanzai Neuquén Province Partial skull and postcranial remains Limaysaurus L. sp. Neuquén Province Single tooth and postcranial materials, at least from 3 individuals

Pterosaurs of the Lohan Cura Formation Genus Species Presence Notes ImagesOrnithocheiriformesIndeterminateNeuquén Province"Isolated teeth"

See also List of dinosaur-bearing rock formations

References

Bibliography

Further reading

A. G. Martinelli, A. C. Garrido, A. M. Forasiepi, E. R. Paz, and Y. Gurovich. 2007. "Notes on fossil remains from the Early Cretaceous Lohan Cura Formation, Neuquén Province, Argentina". Gondwana Research 11:537–552