▁evolution ary ▁tr end ▁in ▁large ▁m amm als ▁on ▁islands ▁is ▁island ▁d war f ing . ▁The ▁smallest ▁d war f ▁species ▁known ▁is ▁S . ▁sum ba ensis ▁from ▁Sum ba , ▁with ▁an ▁estimated ▁body ▁mass ▁of ▁ 2 5 0   kg . ▁The ▁slightly ▁larger ▁S .   s onda ari , ▁known ▁from ▁Early ▁Ple ist oc ene ▁layers ▁on ▁the ▁Indones ian ▁island ▁of ▁Fl ores , ▁had ▁an ▁estimated ▁body ▁weight ▁of ▁between ▁ 3 5 5 ▁and ▁ 6 5 0   kg . ▁Another ▁estimate ▁gives ▁a ▁shoulder ▁height ▁of ▁ ▁and ▁a ▁weight ▁of ▁. ▁A ▁medium - ▁to ▁large - s ized ▁ste god ont , ▁S .   fl or ensis , ▁with ▁a ▁body ▁weight ▁of ▁about ▁ 1 , 7 0 0   kg , ▁appeared ▁about ▁ 8 5 0 , 0 0 0 ▁years ▁ago , ▁and ▁then ▁also ▁evol ved ▁into ▁a ▁d war f ▁form , ▁S . ▁f . ▁ins ular is , ▁with ▁an ▁estimated ▁body ▁mass ▁of ▁about ▁ 5 7 0   kg . ▁Another ▁estimate ▁gives ▁a ▁shoulder ▁height ▁of ▁ ▁and ▁a ▁weight ▁of ▁. ▁The ▁latter ▁was ▁contempor aneous ▁with , ▁and ▁h unted ▁by , ▁the ▁d war f ▁hom in in ▁H omo ▁fl ores i ensis , ▁and ▁disappeared ▁about ▁ 4 9 , 6 0 0 ▁years ▁ago , ▁earlier ▁than ▁initially ▁thought . ▁D war f ▁ste god ont s ▁were