Name: Archaeoindris ‭(‬Ancient indri‭)‬.
Phonetic: Ar-kay-o-in-driss.
Named By: Herbert F.‭ ‬Standing‭ ‬-‭ ‬1908.
Classification: Chordata,‭ ‬Mammalia,‭ ‬Primates,‭ ‬Strepsirrhini,‭ ‬Lemuriformes,‭ ‬Palaeopropithecidae.
Species: A.‭ ‬fontoynonti‭ (‬type‭)‬.
Diet: Herbivore.‭
Size: About‭ ‬1.5‭ ‬meters high and around‭ ‬200‭ ‬kilograms in weight.
Known locations: Madagascar.
Time period: ‬Roughly the Pleistocene to Holocene.
Fossil representation: ‭P‬artial remains.

       Comparable in size to a gorilla,‭ ‬Archaeoindris is one of the largest known sloth lemurs.‭ ‬Initially considered to have been‭ ‬a ground dwelling quadruped,‭ ‬further study has now led to the suggestions that Archaeoindris could have still climbed branches‭ (‬albeit the thicker ones that could support its weight‭) ‬as it foraged for food.‭ ‬This is where the sloth comparison comes from,‭ ‬as rather than being fast and agile like the more lightly built indriid lemurs we know today,‭ ‬Archaeoindris would have probably been slower and more sluggish to reduce energy expenditure as it foraged.
       Other genera of sloth lemur include Babakotia, Mesopropithecus and Palaeopropithecus.

Further reading
- The taxonomic attributions of giant subfossil lemur bones from Ampasambazimba: Archaeoindris and Lemuridotherium. - Journal of Human Evolution 17 (4), p379-391 - M. Vuillaume-Randriamanantena - 1988.
- The extinct sloth lemurs of Madagascar. - Evolutionary Anthropology: Issues, News, and Reviews 12 (6): 252–263. - L. R. Godfrey & W. L. Jungers - 2003.


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