▁of ▁the ▁har sh ▁environment ▁in ▁which ▁it ▁lived . ▁However , ▁other ▁ab el is aur ids ▁have ▁also ▁been ▁found ▁to ▁have ▁compar ably ▁slow ▁growth ▁rates . ▁ ▁Pale o ec ology ▁▁ ▁All ▁spec im ens ▁of ▁Maj ung as aur us ▁have ▁been ▁recovered ▁from ▁the ▁Ma e var ano ▁Form ation ▁in ▁the ▁Mah aj anga ▁Province ▁in ▁north western ▁Mad agas car . ▁Most ▁of ▁these , ▁including ▁all ▁of ▁the ▁most ▁complete ▁material , ▁came ▁from ▁the ▁An emb alem ba ▁Member , ▁although ▁Maj ung as aur us ▁teeth ▁have ▁also ▁been ▁found ▁in ▁the ▁underlying ▁Mas or obe ▁Member ▁and ▁the ▁over lying ▁Mi ad ana ▁Member . ▁While ▁these ▁sed iments ▁have ▁not ▁been ▁dated ▁radi omet r ically , ▁evidence ▁from ▁bi ost rat ig raph y ▁and ▁pale om agnet ism ▁suggest ▁that ▁they ▁were ▁depos ited ▁during ▁the ▁Ma astr icht ian ▁stage , ▁which ▁last ed ▁from ▁ 7 0 ▁to ▁ 6 6 ▁Ma ▁( mill ion ▁years ▁ago ). ▁Maj ung as aur us ▁teeth ▁are ▁found ▁up ▁until ▁the ▁very ▁end ▁of ▁the ▁Ma astr icht ian , ▁when ▁all ▁non - av ian ▁din osa urs ▁became ▁ext inct . ▁ ▁Then ▁as ▁now , ▁Mad agas car ▁was ▁an ▁island , ▁having ▁separated ▁from ▁the ▁Indian ▁sub cont inent ▁less ▁than ▁ 2 0 ▁million ▁years ▁earlier . ▁It ▁was ▁dr ifting ▁north wards ▁but ▁still ▁ 1 0 – 1 5 °