▁Long rich ▁revers ed ▁his ▁position ▁following ▁a ▁ 2 0 1 1 ▁analysis ▁of ▁L anci an ▁birds , ▁in ▁which ▁he ▁and ▁co - auth ors ▁considered ▁all ▁four ▁named ▁species ▁to ▁be ▁distinct . ▁C . ▁min ima ▁and ▁C . ▁pet ra ▁were ▁transferred ▁to ▁the ▁new ▁genus ▁L amar que av is ▁by ▁Feder ico ▁Ag n olin ▁in ▁ 2 0 1 0 , ▁based ▁on ▁their ▁similarity ▁to ▁the ▁South ▁American ▁species ▁L . ▁austral is . ▁ ▁An ▁additional ▁species ▁from ▁the ▁much ▁earlier ▁Din osa ur ▁Park ▁Form ation ▁of ▁Al berta ▁has ▁also ▁since ▁been ▁re - evalu ated ▁as ▁a ▁probable ▁species ▁of ▁L amar que av is ▁rather ▁than ▁C im ol opter y x . ▁ ▁" C im ol opter y x " ▁maxim a ▁was ▁about ▁twice ▁the ▁size ▁of ▁C . ▁r ara , ▁but ▁not ▁enough ▁of ▁its ▁an atom y ▁is ▁known ▁to ▁confident ly ▁determine ▁if ▁it ▁belongs ▁to ▁C im ol opter y x ▁or ▁a ▁different ▁genus . ▁In ▁ 2 0 1 1 , ▁Long rich ▁concluded ▁that ▁it ▁was ▁probably ▁distinct , ▁but ▁did ▁not ▁name ▁a ▁new ▁genus ▁for ▁it . ▁Several ▁collections ▁of ▁material ▁that ▁is ▁similar ▁to ▁C im ol opter y x ▁were ▁referred ▁to ▁by ▁Hope ▁as ▁und et erm ined ▁species , ▁which ▁lack ▁enough ▁unique ▁characteristics ▁to ▁be ▁properly ▁identified , ▁and ▁these ▁may ▁or ▁may ▁not ▁belong ▁to ▁C im ol opter