▁the ▁Arab ic ▁word ▁for ▁" cou rage " ▁and ▁the ▁country ▁of ▁discovery , ▁although ▁our ane ▁is ▁also ▁the ▁Tu are g ▁name ▁for ▁the ▁desert ▁monitor . ▁ ▁Disc overy ▁and ▁naming ▁ ▁Five ▁French ▁p ala e ont ological ▁exped itions ▁were ▁undert aken ▁in ▁the ▁G ad ou fa ou a ▁region ▁of ▁the ▁Sah ara ▁Des ert ▁in ▁Niger ▁between ▁ 1 9 6 5 ▁and ▁ 1 9 7 2 ▁and ▁led ▁by ▁French ▁p ala e ont ologist ▁Philippe ▁Ta quet . ▁These ▁depos its ▁come ▁from ▁G AD ▁ 5 , ▁a ▁layer ▁in ▁the ▁upper ▁El rh az ▁Form ation ▁of ▁the ▁T ég ama ▁Group , ▁which ▁was ▁depos ited ▁during ▁the ▁A pt ian ▁stage ▁of ▁the ▁Early ▁C ret ace ous . ▁On ▁the ▁first ▁expedition , ▁last ing ▁from ▁January – F ebru ary ▁ 1 9 6 5 , ▁eight ▁ igu an od ont ian ▁spec im ens ▁were ▁discovered ▁at ▁the ▁" n iveau ▁des ▁In noc ents " ▁site , ▁east ▁of ▁the ▁E me ched ou i ▁well s . ▁An ▁additional ▁two ▁ske let ons ▁were ▁discovered ▁ ▁sout heast ▁of ▁El rh az ▁in ▁the ▁" C amp ▁des ▁deux ▁Ar bres " ▁local ity , ▁which ▁were ▁given ▁the ▁field ▁numbers ▁G DF ▁ 3 0 0 ▁and ▁G DI ▁ 3 8 1 . ▁Both ▁were ▁collected ▁in ▁the ▁February – A pril ▁ 1 9 9 6 ▁expedition ,