Micodon kiotensis

Micodon kiotensis is the type species of Micodon, an extinct genus of New World monkeys from the Middle Miocene, in the Laventan stage of the South American land mammal ages, about 13.8 to 11.8 million years ago. Its remains come from the La Victoria Formation of the Honda Group at La Venta in Colombia, one of the richest fossil primate sites in South America. It is the smallest primate found in the La Venta fauna and falls within the size range of living marmosets, with a body mass of about 400 grams estimated. Its upper first molar has an unusually large hypocone, and it is considered very likely to have been a marmoset, although it has been suggested that the specimens may instead be deciduous teeth of another La Venta primate such as a squirrel monkey. More material is needed for a fuller description.