Where: Mendoza, Argentina (34.9° S, 68.5° W: paleocoordinates 35.0° S, 67.4° W)
• coordinate estimated from map
When: Montehermosan zone, La Huertita Formation, Pliocene (5.3 - 2.6 Ma)
• Forasiepi et al 2011: Aisol Fm Middle Section (SM).
•Vucetich et al. 2011: The fossil-bearing levels, the middle section of the Aisol Formation, have been considered no older than Huayquerian in age (late Miocene). The evolutionary stage of the new species suggests that the age of these sediments could be even younger, no older than early Pliocene and possibly up to late Pliocene.
•Garrido et al 2014: they redefine the stratigraphy here. The Middle section of Forasiepi et al 2011 corresponds to the La Huertita Fm now that's Pliocene in age.
•En suma, considerando los biocrones de los taxones representados en la Formación La Huertita, una edad Montehermosense para la unidad pareciera ajustarse con los registros. Su extensión en el Chapadmalalen- se podría considerarse de acuerdo a algunos roedores (Caviodon cuyano y el Ctenomyidae aff. Eucoelophorus).
• formation-level stratigraphic resolution
Environment/lithology: fluvial; condensed, gray, silty sandstone
•Garrido, et al. 2014: The sediments of the La Formation Huertita offer at first sight an aspect similar to those of the Aisol Formation, mainly due to the reddish hues that these deposits share in large part. However, the detailed analysis of this sequence makes it possible to observe the existence of an important contrast in the lithological and facial constitution.
•In general, the La Huertita Formation has a broad domain of fine deposits (pelitic and psamitic) of floodplain (architectural element FF; table 2), which make up up to 85% of the succession (Figure 3 ). In this sense, the dominant facies corresponds to the levels of solid silty sandstones (Sm facies), a factor that gives the deposits a loessoid appearance. These sediments are highlighted by their compact and uniform character, pinkish gray (5R 8/2) and good granulometric selection. In some sectors there is a cyclical alternation of solid sand-silt deposits (Sm facies) and fine sandstones with convect stratification (Scl facies), which occurred in banks smaller than 30 cm thick. This last pattern suggests the periodic existence of heavily saturated earth in wate
Size class: macrofossils
Collection methods: Museo de Historia Natural de San Rafael, Mendoza, Argentina
Primary reference: A. M. Forasiepi, A. G. Martinelli, M. S. Fuente, S. Dieguez, and M. Bond. 2011. Paleontology and stratigraphy of the Aisol Formation (Neogene), San Rafael, Mendoza. Cenozoic Geology of the Central Andes of Argentina 135-154 [E. Vlachos/E. Vlachos]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 189520: authorized by Evangelos Vlachos, entered by Evangelos Vlachos on 25.10.2017, edited by Grace Varnham and Miranta Kouvari
Creative Commons license: CC BY (attribution)