y log en etic ▁analysis , ▁it ▁was ▁thought ▁to ▁represent ▁instead ▁some ▁form ▁with ▁conver gent ▁features ▁from ▁many ▁groups . ▁The ▁study ▁of ▁Tsch opp ▁et al . ▁did ▁find ▁that ▁a ▁cam ar as aur id ▁position ▁for ▁the ▁tax on ▁was ▁supported , ▁but ▁noted ▁that ▁the ▁position ▁of ▁the ▁tax on ▁was ▁found ▁to ▁be ▁highly ▁variable ▁and ▁there ▁was ▁no ▁clearly ▁more ▁likely ▁position . ▁ ▁A pat osa urus ▁al en quer ensis ▁was ▁named ▁in ▁ 1 9 5 7 ▁by ▁Albert - F éli x ▁de ▁L app ar ent ▁and ▁Georges ▁Z by w es ki . ▁It ▁was ▁based ▁on ▁post ▁c ran ial ▁material ▁from ▁Portugal . ▁In ▁ 1 9 9 0 ▁this ▁material ▁was ▁re ass igned ▁to ▁Cam ar as aur us , ▁but ▁in ▁ 1 9 9 8 ▁it ▁was ▁given ▁its ▁own ▁genus , ▁L our in has aur us . ▁This ▁was ▁further ▁supported ▁by ▁the ▁find ings ▁of ▁Tsch opp ▁et al . ▁in ▁ 2 0 1 5 , ▁where ▁L our in has aur us ▁was ▁found ▁to ▁be ▁sister ▁to ▁Cam ar as aur us ▁and ▁other ▁cam ar as aur ids . ▁ ▁A pat osa urus ▁y ahn ah pin ▁was ▁named ▁by ▁James ▁Fil la ▁and ▁Patrick ▁Red man ▁in ▁ 1 9 9 4 . ▁Bak ker ▁made ▁A . y ahn ah pin ▁the ▁type ▁species ▁of ▁a ▁new ▁genus , ▁E ob ront osa