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Lecho Formation : ウィキペディア英語版 | Lecho Formation
The Lecho Formation is a geological formation in Argentina whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.〔Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, South America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 600-604. ISBN 0-520-24209-2.〕 According to Frankfurt and Chiappe (1999), the Lecho Formation is located in northwestern Argentina and 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. The paleoenvironment was a fluvio-lacustrine coastal plain. Fossils from this formation include the titanosaur ''Saltasaurus'' along with a variety of avian and non-avian theropods. | ==Vertebrate paleofauna==
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