Analcitherium
Analcitherium is an extinct genus of scelidotheriid sloth that lived during the Early Miocene in what is now Argentina. Fossils have been found in the Santa Cruz Formation of Argentina. Taxonomy 
 Analcitherium was first named by Florentino Ameghino in 1891 based on fossils found in Argentina, dating to the Early Miocene. Originally thought to belong to a juvenile Nematherium, it is now usually considered to be a distinct genus. Analcitherium is a member of the Scelidotheriidae, a group of terrestrial sloths known from the Oligocene and Pleistocene that a characterized by an elongated snout. Although scelidotheriids are usually placed as a subfamily of the Mylodontidae, they are sometimes considered to be a separate family, Scelidotheriidae. Below is a phylogenetic tree of the Mylodontidae, based on the work of Varela et al. 2018. References 

Prehistoric sloths
Prehistoric placental genera
Miocene mammals of South America
Miocene xenarthrans
Neogene Argentina
Fossils of Argentina
Santacrucian
Fossil taxa described in 1891
Taxa named by Florentino Ameghino
Austral or Magallanes Basin
Santa Cruz Formation