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Salla ( of Bolivia)

Also known as Salla-Luribay, Estratos de Salla, Salla Beds

Where: Bolivia (17.2° S, 67.6° W: paleocoordinates 18.4° S, 61.9° W)

• coordinate stated in text

• basin-level geographic resolution

When: Salla Formation, Deseadan (29.0 - 21.0 Ma)

• See MacFadden et al. (1985:225–227) for a description of stratigraphy. They recognized a number of distinct fossil-bearing levels, several of which comprise more than one locality. Kay et al. (1998) revised the age of the fauna and introduced a new stratigraphic scheme that divides the Salla Beds into Units 1 (lowest) through 10 (highest).

•From highest to lowest, the stratigraphy and principal fossil-bearing levels can be summarized as follows (MacFadden et al., 1985; Kay et al., 1998):

•- Unnamed unit of thin, probably Pleistocene deposits that locally cover the fossil-bearing strata

•- Unit 10

•- Unit 9. Kay et al. (1998) place the Oligo-Miocene boundary near the top of Unit 9.

•- Unit 8

•- Unit 7

•- Unit 6, Upper White Level

•- Unit 5, Branisella level

•- Unit 4, Principal Guide Level

•- Unit 3 with 170 m level ("Red Rodent Zone") and 100 m level

•- Unit 2 with 30-45 m level

•- Unit 1

•- Luribay Conglomerate, underlying Eocene unit

• formation-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Preservation: original phosphate

Collected by Branisa, Hoffstetter, Hartenberger, Villarroel, MacFadden, et al. in 1962, 2013; reposited in the MNHN, MNHN (La Paz)

• As reviewed by MacFadden et al. (1985:224), fossils were discovered at Salla by G. Bejarano in 1962. Subsequent collectors have included (among others):

•- L. Branisa, mid-1960s, Princeton University, collections now at Yale (YPM-PU)

•- Hoffstetter, late 1960s–early 1970s, Institut de Paléontologie, Paris, collection in MNHN (Paris)

•- Hartenberger, Montpellier

•- Villarroel, GEOBOL, La Paz, collection in MNHN (La Paz)

•- MacFadden group, University of Florida, after 1978

•- Rincón/Anaya/Shockey group, 2012-2013, collection in Universidad Autónoma Tomás Frías, Potosí, Bolivia

•Many of the early collections and descriptions lack precise stratigraphic data; papers published since MacFadden et al. (1985) and Kay et al. (1998) usually but not always give precise localities referenced to the fossiliferous levels and stratigraphic units established by these papers.

•This collection summarizes all records from the Salla Beds. The database contains a number of other collections from the Salla area. Collections 174773, 14208, 133539, 133596, and 143001 contain records from several stratigraphic levels and localities. The following collections represent more precise stratigraphic levels:

•- 95644, Los Cactus, in the Branisella Level, Unit 5

•- 133691, Unit 6 at Tapial Pampa

•- 13081, Tapial Pampa, containing specimens from Units 5 and/or 6

•- 14210, Branisa locality V-2, which according to MacFadden et al. (1985:235) contains specimens from above the Principal Guide Level (i.e., Units 5 and up).

Primary reference: R. Hoffstetter. 1969. Un primate de l'Oligocene inferieur sud-americain: Branisella boliviana gen. et sp. nov. Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences D, Sciences Naturelles 269(4):434-437 [M. Uhen/M. Uhen] more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 95688: authorized by Mark Uhen, entered by Mark Uhen on 23.04.2010, edited by Jelle Zijlstra and Andrés Cardenas

Creative Commons license: CC BY (attribution)