PBDB Collection

Ayo Ayo-Viscachani: Montehermosan - Chapadmalalan, Bolivia
collected by P.-A. Saint-André, F. Pujos 1989-1990, 2000

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

Mammalia

	Didelphoidea indet. Gray 1821	Boscaini et al. 2019

	Sparassocynus heterotopicus Villarroel and Marshall 1983	Villarroel and Marshall 1983
	= Didelphoidea indet. Gray 1821	Abello et al. 2015
Mammalia - Argyrolagidae

	Microtragulus bolivianus Hoffstetter and Villarroel 1974	Boscaini et al. 2019
Mammalia - Notoungulata - Toxodontidae

	Posnanskytherium cf. viscachanense Saint-André 1999	Boscaini et al. 2019
	= Posnanskytherium viscachanense Saint-André 1999	Salas-Gismondi et al. 2023
	MNHN-AYO 191
Mammalia - Megatheriidae

	Megatherium altiplanicum Saint-Andre and De Iuliis 2001
	Holotype (MNHN AYO 101), distal end of a left femur (MNHN AYO 105); right cuneiform (MNHN AYO 150); left radius (MNHN AYO 203); premaxillae of a juvenile individual (MNHN AYO 230); proximal half of a right ulna (MNHN BOL V 3304); right navicular (MNHN BOL V 3312)
Mammalia - Mylodontidae

	Simomylodon uccasamamensis n. gen., n. sp. Saint-André et al. 2010	Saint-André et al. 2010
	Holotype GB 078, Paratype MNHN-BOL V 3321
Mammalia - Cingulata - Pampatheriidae

	Pampatherium sp. Ameghino 1875	Boscaini et al. 2019
Mammalia - Cingulata - Dasypodidae

	Macroeuphractus cf. moreni	Boscaini et al. 2019
Mammalia - Rodentia - Hydrochoeridae

	Chapalmatherium sp. Ameghino 1908	Boscaini et al. 2019
Mammalia - Rodentia - Ctenomyidae

	Praectenomys sp. Villarroel 1975	Boscaini et al. 2019

	Praectenomys (cf. Lagostomopsis) sp. Villarroel 1975	Boscaini et al. 2019
Mammalia - Panameriungulata - Macraucheniidae

	Macrauchenia minor	Boscaini et al. 2019
see common names

Country:	Bolivia	State/province:	La Paz
Coordinates:	17.1° South, 68.0° West (view map)
Paleocoordinates:	16.8° South, 66.8° West (Wright 2013)
Basis of coordinate:	stated in text
Geographic resolution:	small collection

Period:	Neogene	Epoch:	Pliocene
Stage:	Zanclean	10 m.y. bin:	Cenozoic 6
Key time interval:	Montehermosan - Chapadmalalan
Age range of interval:	5 - 3 m.y. ago
Age estimate:	5.4 to 2.8 Ma (K-Ar)

Formation:	Umala
Stratigraphic resolution:	group of beds
Stratigraphy comments: Ages obtained by Marshall et al. (1992). Overall, the remains of S. uccasamamensis are from deposits that are virtually bracketed below by ‘Toba 76’, which we consider now dated at 5.26 ± 0.02 Myr, and above by the 2.8 Myr Ayo Ayo tuff, which correspond to the base and the top of the Umala Formation and roughly coincide with the Pliocene (Marshall & Sempéré, 1991)

Primary lithology:	lithified sandy sandstone
Environment:	lacustrine - large

Modes of preservation:	body
Size of fossils:	macrofossils,mesofossils

Reason for describing collection:	taxonomic analysis
Collectors:	P.-A. Saint-André, F. Pujos	Collection dates:	1989-1990, 2000
Collection method comments: Repository: Museo Nacional de Historia Natural La Paz Saint Andre et al 2010: P.-A. Saint-André collected specimens in 1989-1990 and published them in his thesis in 1994 and F. Pujos revisited some of the same localities in 2000 for his thesis. Results are presented in this paper.

Database number:	142380
Authorizer:	C. Jaramillo, P. Mannion, J. Carrillo	Enterer:	A. Cárdenas, K. Pino, M. Kouvari, G. Varnham
Modifier:	M. Kouvari	Research group:	vertebrate
Created:	2013-04-10 09:34:15	Last modified:	2025-02-22 15:12:02
Access level:	authorizer only	Released:	2015-04-10 09:34:15
Creative Commons license:	CC0

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]
67543		A. Boscaini, T. J. Gaudin, B. Mamani Quispe, P. Munch, P.-O. Antoine and F. Pujos. 2019. New well-preserved craniodental remains of Simomylodon uccasamamensis (Xenarthra: Mylodontidae) from the Pliocene of the Bolivian Altiplano: phylogenetic, chronostratigraphic and palaeobiogeographical implications. Zoological Journal of the Linnean Society 185(2):459-486 [P. Mannion/M. Kouvari/P. Mannion]
67542		P. A. Saint-André, F. Pujos, C. Cartelle, G. De Iuliis, T. J. Gaudin, H. G. McDonald, and B. Mamani Quispe. 2010. Nouveaux paresseux terrestres (Mammalia, Xenarthra, Mylodontidae) du Néogène de l’Altiplano bolivien. Geodiversitas 32(2):255-306 [P. Mannion/M. Kouvari]
85790		R. Salas-Gismondi, D. Ochoa, J. Gamarra, F. Pujos, D.A. Foster and J. V. Tejada. 2023. Pliocene Pre-GABI herbivorous mammals from Espinar, Peruvian Andean Plateau. Journal of Vertebrate Paleontology e2237079 [J. Carrillo/K. Pino/P. Mannion]
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]