- Source: Lecho Formation
The Lecho Formation is a geological formation in the Salta Basin of the provinces Jujuy and Salta of northwestern Argentina. Its strata date back to the Early Maastrichtian, and is a unit of the Salta Group. The fine-grained bioturbated sandstones of the formation were deposited in a fluvial to lacustrine coastal plain environment.
Dinosaur remains are among the fossils that have been recovered from the formation.
According to Frankfurt and Chiappe (1999), the Lecho Formation is composed of reddish sandstones. The Lecho is part of the Upper/Late Cretaceous Balbuena Subgroup (Salta Group), which is a near-border stratigraphic unit of the Andean sedimentary basin. Fossils from this formation include the titanosaur Saltasaurus along with a variety of avian and non-avian theropods.
Fossil content
See also
List of dinosaur-bearing rock formations
Marília Formation
References
= Bibliography
=Walker; Dyke (2009), "Euenantiornithine birds from the Late Cretaceous of El Brete (Argentina)", Irish Journal of Earth Sciences, 27: 15–62, doi:10.3318/IJES.2010.27.15
Agnolin, F.L.; Martinelli, A.G. (2007), "Did oviraptorosaurs (Dinosauria; Theropoda) inhabit Argentina?" (PDF), Cretaceous Research, 28 (5): 785–790, Bibcode:2007CrRes..28..785A, doi:10.1016/j.cretres.2006.10.006
Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21
Frankfurt, N.G.; Chiappe, L.M. (1999), "A Possible Oviraptorosaur From The Late Cretaceous of Northwestern Argentina", Journal of Vertebrate Paleontology, 19 (1): 101–105, Bibcode:1999JVPal..19..101F, doi:10.1080/02724634.1999.10011126