Also known as 2 km west of Arenales
Where: Potosí, Bolivia (21.7° S, 65.6° W: paleocoordinates 22.1° S, 61.9° W)
• coordinate stated in text
• local area-level geographic resolution
When: Nazareno Formation, Langhian (16.0 - 13.8 Ma)
• Probably Langhian based on Croft and Anaya (2020); Townsend and Croft 2010: 9.58 ± 0.11 Ma to 20.9 ± 0.6 Ma? Colloncuran Oiso 1991; Héail et al. 1996; Horton 1998
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•middle and upper members of the Nazareno Formation
• group of beds-level stratigraphic resolution
Environment/lithology: fluvial-lacustrine; poorly lithified mudstone and conglomerate
Size classes: macrofossils, mesofossils
Preservation: permineralized
Reposited in the MNHN (La Paz)
Collection methods: surface (float), surface (in situ), mechanical,
Primary reference: L. G. Marshall and T. Sempere. 1991. The Eocene to Pleistocene vertebrates of Bolivia and their stratigraphic context: a review. In R. Suárez-Soruco (ed.), Fósiles y Facies de Bolivia - Vol. 1 Vertebrados (Revista Ténica de YPFB) 12(3-4):631-652 [D. Croft/D. Weinstein/S. Bruning]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 68402: authorized by Darin Croft, entered by Deborah Weinstein on 19.01.2007, edited by Philip Mannion and Jelle Zijlstra
Creative Commons license: CC BY (attribution)
Taxonomic list
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Juchuysillu arenalesensis n. gen. n. sp.1 Croft and Anaya 2020 notoungulate UATF-V-002075 - holotype
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