Río Desaguadero, Ulloma, Oruro (Pleistocene of Bolivia)

Where: Oruro, Bolivia (17.4° S, 68.5° W: paleocoordinates 17.4° S, 68.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Ulloma Formation, Pleistocene (2.6 - 0.0 Ma)

• Fossils are from the base of the Ulloma Formation. Lujanian SALMA, possibly early Lujanian.

Environment/lithology: lacustrine - large; fine-grained, calcareous sandstone

• Ulloma Formation consists of well stratified fine grained sands rich in calcareous nodules, bounded below by an undated tuff and above by a diatomite. The Ulloma Formation was deposited as part of Lake Ballivian, which was a southern extension of Lake Titicaca, during retreat of the Sorata glaciation.

Size classes: macrofossils, mesofossils

Reposited in the SGOPV

• Additional repository: Museum of Evolution, Uppsala University, Sweden (PIU)

Primary reference: G. de Iuliis. 2006. On the taxonomic status of Megatherium sundti Philippi, 1893 (Mammalia: Xenarthra: Megatheriidae). Ameghiniana 43(1):161-169 [D. Croft/D. Croft]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 63761: authorized by Darin Croft, entered by Darin Croft on 20.08.2006, edited by John Alroy

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Proboscidea - Gomphotheriidae
Cuvieronius tropicus1
Cuvieronius tropicus1 Cope 1884 gomphothere
many
 Panameriungulata - Macraucheniidae
Macrauchenia ullomensis2
Macrauchenia ullomensis2 Sefve 1914 placental
 Perissodactyla - Equidae
"Onohippidium bolivianum n. sp." = Hippidion devillei2
"Onohippidium bolivianum n. sp." = Hippidion devillei2 Gervais 1855 horse
many
 Megatherioidea - Megatheriidae
Megatherium cf. americanum2, Megatherium sundti n. sp.
Megatherium cf. americanum2 Cuvier 1796 edentate
Megatherium sundti n. sp. Philippi 1893 edentate
holotype plus 11 specimens
  - Mylodontidae
Scelidodon chiliense2
Scelidodon chiliense2 Lydekker 1886 edentate
 Cingulata - Glyptodontidae
Glyptodon sp.2
Glyptodon sp.2 Owen 1839 glyptodon
1Alroy 2007; 2Marshall and Salinas Z 1991