The greater long-tailed shrew tenrec is one of eight species of Microgale tenrecs whose remains have been found in deposits in caverns at Andrahomana on the southern coast of Madagascar alongside the bones of extinct birds including elephant birds and Malagasy sheldgoose. The latter, a waterbird, indicates that a large body of fresh water may have been nearby and moister conditions were probably present in the past. The creatures may have fallen into the cave system through "skylights" in the roof. The cave is outside the present day range of the greater long-tailed shrew tenrec.