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Proterotheriids
Proterotheriidae is an extinction, extinct family of Litopterna, litoptern ungulates known from the Eocene-Late Pleistocene of South America. Members of the group were small-medium sized cursorial Herbivore, herbivores with brachydont Tooth, teeth, with their Toe, toes showing progressive reduction, with later members of the group bearing weight on a single large toe similar to living Horse, horses. Description Two subfamilies and 18 genera of Proterotheriidae are known. All forms were small or medium-sized. Typical is a reduction of the number of toes and brachydont or mesodont teeth. The family is recorded since the late Palaeocene. Various fossils are known from many parts of the South American continent. The diversity decreased in the Miocene to Pliocene and it has been assumed for a long time that they entirely disappeared in the late Pliocene. However, fossils found in Argentina, Brazil and Uruguay show that one member of the group, ''Neolicaphrium recens'' survived into ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thoatherium
''Thoatherium'' (meaning "active swift-beast") is an extinct genus of litoptern mammals from the Early Miocene of Argentina. Fossils of the genus have been found in the Santa Cruz Formation in Argentina.''Thoatherium'' at .org Description With a length of , the -like ''Thoatherium'' was a small representative of the order . Judging from its long legs, it was a fast runner. ''Thoatherium'' had remarkably reduced toes; ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
