Pucadelphys andinus was a marsupial species belonging to the family Didelphidae.

Fossils of Pucadelphys have been found at Tiupampa (Bolivia

Bolivia

Bolivia officially known as Plurinational State of Bolivia , is a landlocked country in central South America. It is the poorest country in South America...

).

It is small and likely to have eaten insects. It had a long tail, although incomplete on the best preserved fossils. It is possible that the tail was longer than (or at least as long as) its body. 17 vertabrae were preserved, and its estimated that there was 5 to 10 additional vertabrae originally.

It is regarded as partially arboreal, and partially terrestrial.