Stratigraphic range: Early Maastrichtian ~70–68 Ma
PreꞒ
Ꞓ
O
S
D
C
P
T
J
K
Pg
N
↓
Type
Geological formation
Unit of
Salta Group
Underlies
Yacoraite Formation
Overlies
Los Blanquitos Formation
Lithology
Primary
Sandstone
Location
Coordinates
26°06′S65°24′W / 26.1°S 65.4°W / -26.1; -65.4
Approximate paleocoordinates
28°36′S52°00′W / 28.6°S 52.0°W / -28.6; -52.0
Region
Jujuy, Salta
Country
Argentina
Extent
Salta Basin
Lecho Formation (Argentina)
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.[1]
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.
^Weishampel et al., 2004, "Dinosaur distribution (Late Cretaceous, South America)." pp. 600-604
The LechoFormation is a geological formation in the Salta Basin of the provinces Jujuy and Salta of northwestern Argentina. Its strata date back to the...
known only from footprints in the Eumeralla Formation (and possibly also represented in the Wonthaggi Formation by a single furcula). Among the smallest...
plates" in Latin. The holotype, PVL 4017-92, was found in a layer of the LechoFormation dating from the early Maastrichtian stage of the Upper Cretaceous period...
Adamantina Formation La Colonia FormationLechoFormation Los Alamitos Formation Los Llanos Formation Marília Formation Salgado et al., 2007 Weishampel...
Maastrichtian LechoFormation which is some 10 million years younger. Geology portal Paleontology portal List of fossil sites Los Alamitos Formation Los Blanquitos...
known species, S. australis, is known from fossils collected from the LechoFormation (Maastrichtian age) of Estancia El Brete, in the southern tip of the...
mya) LechoFormation at estancia El Brete, Argentina. The genus contains a single species, Lectavis bretincola. It's naming means "LechoFormation bird...
site, Fidel Leal. The holotype, PVL 4061, was found in a layer of the LechoFormation of Salta Province, Argentina, dating from the late Cretaceous period...
(1993) " Enantiornithine (Aves) Tarsometatarsi from the Cretaceous LechoFormation of Northwestern Argentina" American Museum Novitates December 27, 1993...
(1993): Enantiornithine (Aves) Tarsometatarsi from the Cretaceous LechoFormation of Northwestern Argentina. American Museum Novitates 3083: 1-27. [English...
Apesteguía, Sebastián (2007). "The sauropod diversity of the La Amarga Formation (Barremian), Neuquén (Argentina)". Gondwana Research. 12 (4): 533–546...
(1992) "Enantiornithine (Aves) Tarsometatarsi from the Cretaceous LechoFormation of Northwestern Argentina" Journal of Vertebrate Paleontology. September...
Luis M. "Enantiornithine (Aves) tarsometatarsi from the Cretaceous LechoFormation of northwestern Argentina. American Museum novitates; no. 3083". Biodiversity...
which the same formation is exposed. Such sites may have separate entries if they are considered to be more notable than the formation as a whole. In...
humerus, recovered from the El Brete locality (Maastrichtian age), LechoFormation of Argentina. A possible third species is represented by the unnamed...
(Maastrichtian, c.70.6 – 66 mya). The fossil bones were found in the LechoFormation at estancia El Brete, Argentina."Yungavolucris brevipedalis" means...
pachycephalosaurine squamosals as revealed by juvenile specimens from the Hell Creek Formation, eastern Montana". Journal of Vertebrate Paleontology. 29 (1): 291–294...
only currently accepted species E. leali is from the Late Cretaceous LechoFormation at El Brete, Argentina. It was described from specimen PVL-4035, a...
(1993). "Enantiornithine (Aves) Tarsometatarsi from the Cretaceous LechoFormation of Northwestern Argentina". American Museum Novitates (3083): 1–27...
The Los Blanquitos Formation is a geological formation in Salta Province, Argentina whose strata date back to the late Campanian to early Maastichtian...
The Yacoraite Formation is a largely Mesozoic geologic formation. The deposits of this formation mainly date from the Maastrichtian of the Upper Cretaceous...
recovered from named geologic formations (e.g. the Morrison Formation or the Hell Creek Formation). When this is not the case, a city or landmark near the...
(1993). "Enantiotnithine (Aves) Tarsometatarsi from the Cretaceous LechoFormation of Northwestern Argentina" (PDF). American Museum Novitates (3083):...
(1993). "Enantiornithine (Aves) Tarsometatarsi from the Cretaceous LechoFormation of Northwestern Argentina". American Museum Novitates (3083): 1–27...
(1974). "Fossil mosses from the bisaccate zone of the mid-Eocene Allenby Formation, British Columbia". Canadian Journal of Earth Sciences. 11 (3): 409–421...
tibiotarsus, recovered from the El Brete locality (Maastrichtian age), LechoFormation of Argentina. The holotype indicates an animal with a length of 33 cm...
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