CONICET | Buscador de Institutos y Recursos Humanos

Horses are a conspicuous group of immigrant mammals from North America that arrived in South America during the late Pliocene and no survived the megafaunal extinction approximately ten thousand years ago. Two main equids lineages are found in the Argentina. The first lineage is the horses sensu stricto is defines a subgenus of its own, Equus (Amerhippus), which appears at the middle Pleistocene and showed horse-like anatomical features. The second lineage is the genus Hippidion, which were horses with very distinctive anatomical features that recorded first time at the late Pliocene. The present study compiles updated data on the phylogeny, systematics and ecology of both lineages recorded in Argentina.