The Puerto Yeruá Formation is a Late Cretaceous geologic formation in the Paraná Basin, pertaining to Entre Ríos Province, Argentina. Dinosaur remains are among the fossils that have been recovered from the formation,Weishampel et al., 2004, pp.517-607 as well as egg fragments and fossilized wood.
Description The formation comprises red claystones and grey sandstones, medium-thick, well silicified, partly conglomeratic, whitish and reddish color thanks to the presence of iron oxides and frequently calcareous cement. It was deposited in a lacustrine to floodplain humid environment with seasonal rainfall. Fossils of cf. Sphaerovum erbeni (Faveoloolithidae),De Valais et al., 2003, p.509 Theropoda indet.,De Valais et al., 2003, p.508 and Ankylosauria indet. are reported from the formation.De Valais et al., 2003, p.507Ita-i-cora at Fossilworks.org The formation has been correlated with the Guichón Formation of eastern Uruguay.Soto et al., 2009, p.13
Paleofauna Argyrosaurus superbus (lithostrotia indet.) Paraperseoxylon septatumFranco et al., 2015
Trace fossils Elipsoideichnus meyeri
See also List of dinosaur-bearing rock formations List of stratigraphic units with few dinosaur genera Guichón Formation
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