Umala, La Paz: Montehermosan - Chapadmalalan, Bolivia

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Megatheriidae
cf. Megatherium sp. Cuvier 1796
Mammalia - Mylodontidae
Mylodontinae indet. Gill 1872
Mammalia - Cingulata - Pampatheriidae
cf. Plaina sp. Castellanos 1927
Mammalia - Cingulata - Dasypodidae
Macroeuphractus sp. Ameghino 1887
Mammalia - Rodentia - Ctenomyidae
Praectenomys rhombidens Quintana 1994
Praectenomys vagus Villaroel 1975
Mammalia - Rodentia - Hydrochoeridae
Chapalmatherium saavedrai Hoffstetter et al. 1984
    = Phugatherium saavedrai
Deschamps et al. 2013
Mammalia - Panameriungulata - Macraucheniidae
cf. Promacrauchenia sp. Ameghino 1904
Mammalia - Notoungulata - Toxodontidae
Posnanskytherium desaguaderoi Liendo Lazarte 1943
Mammalia
Didelphoidea indet. Gray 1821
Sparassocynus heterotopicus n. sp. Villarroel and Marshall 1983
Villarroel and Marshall 1983
MNHN-BOL-011896
Mammalia - Paucituberculata - Caenolestidae
? Caenolestidae indet. Trouessart 1898
Mammalia - Argyrolagidae
Microtragulus bolivianus Hoffstetter and Villarroel 1974
see common names

Geography
Country:Bolivia State/province:La Paz
Coordinates: 18.8° South, 66.2° West (view map)
Paleocoordinates:18.6° South, 64.9° West (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period: Neogene Epoch: Pliocene
Stage: Zanclean 10 m.y. bin: Cenozoic 6
Key time interval: Montehermosan - Chapadmalalan
Age range of interval: 4.9 - 2.9 m.y. ago
Stratigraphy
Formation:Umala
Stratigraphic resolution:formation
Stratigraphy comments: This collection had a E. Pliocene but changed it to Montehermosan-Chapadmalalan.

Boscaini et al 2018: a horizon bounded below by Toba 76 and above by another volcanic level, the 2.8 Ma Ayo Ayo tuff ; its age is Montehermosan- Chapadmalalan (early and middle Pliocene).
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Metadata
Database number:70641
Authorizer:D. Croft, P. Mannion, C. Jaramillo Enterer:D. Weinstein, C. Jaramillo, G. Varnham
Modifier:M. Kouvari Research group:vertebrate
Created:2007-04-01 07:34:34 Last modified:2020-11-30 10:46:36
Access level:the public Released:2007-04-01 07:34:34
Creative Commons license:CC BY
Reference information

Primary reference:
19694. 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]

Secondary references:

72969 M. A. Abello, M. de los Reyes, A. M. Candela, F. Pujos, D. Voglino and B. M. Quispe. 2015. Description of a new species of Sparassocynus (Marsupialia: Didelphoidea: Sparassocynidae) from the late Miocene of Jujuy (Argentina) and taxonomic review of Sparassocynus heterotopicus from the Pliocene of Bolivia. Zootaxa 3937(1):147-160 [P. Mannion/G. Varnham]
54852 C. M. Deschamps, M. G. Vucetich, and C. I. M. A. Montalvo Zárate. 2013. Capybaras (Rodentia, Hydrochoeridae, Hydrochoerinae) and their bearing in the calibration of the late Miocene-Pliocene sequences of South America. Journal of South American Earth Sciences 48:145-158 [C. Jaramillo/C. Jaramillo/M. Uhen]
42736 C. Villarroel and L. G. Marshall. 1983. Two new late Tertiary marsupials (Hathlyacyninae and Sparassocyninae) from the Bolivian altiplano. Journal of Paleontology 57(5):1061-1066 [C. Jaramillo/A. Cárdenas]