 This cave also contains numerous remains of members of the extinct South American megafauna, such as ground sloths, litopternans, gomphotheres, and glyptodonts, in addition to 16 species of cricetid rodents, but it is not certain that all remains from this cave are from the same age.Remains of "Lundomys" have been found at six Pleistocene localities in Buenos Aires Province, Argentina, which suggests a warm and humid paleoclimate there.The oldest deposits, at Bajo San José, date to Marine Isotopic Stage 11, about 420,000 to 360,000 years ago, while younger specimens from other localities are as little as 30,000 years old.