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.

MylodontidaeNematherium Scelidotheriinae Analcitherium Neonematherium Sibyllotherium Proscelidodon Catonyx Scelidotherium Valgipes Pseudoprepotherium Orophodontinae? Brievabradys Octodontotherium Paroctodontotherium Octomylodon Urumacotherium Baraguatherium Octodontobradys Mylodontinae Mylodon Thinobadistes Lestodon Lestobradys Bolivartherium Simomylodon Pleurolestodon Glossotherium Paramylodon
Nematherium
Scelidotheriinae Analcitherium Neonematherium Sibyllotherium Proscelidodon Catonyx Scelidotherium Valgipes Pseudoprepotherium Orophodontinae? Brievabradys Octodontotherium Paroctodontotherium Octomylodon Urumacotherium Baraguatherium Octodontobradys Mylodontinae Mylodon Thinobadistes Lestodon Lestobradys Bolivartherium Simomylodon Pleurolestodon Glossotherium Paramylodon
ScelidotheriinaeAnalcitherium Neonematherium Sibyllotherium Proscelidodon Catonyx Scelidotherium Valgipes
Analcitherium
Neonematherium Sibyllotherium Proscelidodon Catonyx Scelidotherium Valgipes
Neonematherium
Sibyllotherium Proscelidodon Catonyx Scelidotherium Valgipes
Sibyllotherium
Proscelidodon Catonyx Scelidotherium Valgipes
Proscelidodon
Catonyx Scelidotherium Valgipes
Catonyx
Scelidotherium Valgipes
Scelidotherium
Valgipes
Pseudoprepotherium Orophodontinae? Brievabradys Octodontotherium Paroctodontotherium Octomylodon Urumacotherium Baraguatherium Octodontobradys Mylodontinae Mylodon Thinobadistes Lestodon Lestobradys Bolivartherium Simomylodon Pleurolestodon Glossotherium Paramylodon
Pseudoprepotherium
Orophodontinae? Brievabradys Octodontotherium Paroctodontotherium Octomylodon Urumacotherium Baraguatherium Octodontobradys Mylodontinae Mylodon Thinobadistes Lestodon Lestobradys Bolivartherium Simomylodon Pleurolestodon Glossotherium Paramylodon
Orophodontinae?Brievabradys Octodontotherium Paroctodontotherium Octomylodon Urumacotherium Baraguatherium Octodontobradys
Brievabradys
Octodontotherium Paroctodontotherium Octomylodon Urumacotherium Baraguatherium Octodontobradys
Octodontotherium
Paroctodontotherium Octomylodon Urumacotherium Baraguatherium Octodontobradys
Paroctodontotherium
Octomylodon Urumacotherium Baraguatherium Octodontobradys
Octomylodon
Urumacotherium Baraguatherium Octodontobradys
Urumacotherium
Baraguatherium Octodontobradys
Baraguatherium
Octodontobradys
MylodontinaeMylodon Thinobadistes Lestodon Lestobradys Bolivartherium Simomylodon Pleurolestodon Glossotherium Paramylodon
Mylodon
Thinobadistes Lestodon Lestobradys Bolivartherium Simomylodon Pleurolestodon Glossotherium Paramylodon
Thinobadistes Lestodon Lestobradys Bolivartherium
Thinobadistes
Lestodon Lestobradys Bolivartherium
Lestodon
Lestobradys Bolivartherium
Lestobradys
Bolivartherium
Simomylodon Pleurolestodon Glossotherium Paramylodon
Simomylodon Pleurolestodon
Simomylodon
Pleurolestodon
Glossotherium Paramylodon
Glossotherium
Paramylodon