Giant aye-ayes are believed to be very similar morphologically to the aye-aye, but 2 to 2.5 times larger, based upon jaw and incisor measurements.

Circa 885 - Daubentonia robusta survived in Madagascar until about this time.

Giant aye-aye (Daubentonia robusta)

The giant aye-aye (Daubentonia robusta) is an extinct relative of the aye-aye, the only other species in the genus Daubentonia.

Plesiorycteropus is known from a number of subfossil bones, comparable to coverage of some of the poorly known subfossil lemurs, such as Daubentonia robusta.

Another Plesiorycteropus innominate was mistakenly assigned to Daubentonia robusta, the extinct giant aye-aye, and other material has been misidentified as of a dwarf lemur (Cheirogaleus).

The Aye-aye is the only Extant taxon member of the genus (although it is currently classified as Near Threatened by the IUCN); a second species, 'Daubentonia robusta', appears to have become extinct at some point within the last 1000 years.