ids ▁because ▁of ▁the ▁inst ability ▁of ▁A can th oph olis . ▁Str uth ios aur inae ▁was ▁decided ▁on ▁as ▁the ▁name ▁of ▁the ▁cla de , ▁as ▁it ▁was ▁the ▁next ▁published ▁term ▁after ▁A can th oph ol inae . ▁To ▁ensure ▁the ▁group ▁was ▁rendered ▁valid , ▁Kirk land ▁et ▁al . ▁re defined ▁Str uth ios aur inae ▁as ▁the ▁most ▁inclus ive ▁cla de ▁containing ▁Europ elta ▁but ▁not ▁C ed arp elta , ▁P elor op l ites , ▁Sau rop elta , ▁or ▁Ed mont onia . ▁This ▁definition ▁includes ▁the ▁gener a ▁An op l osa urus , ▁Europ elta , ▁Hung ar osa urus ▁and ▁Str uth ios aur us ▁inside ▁the ▁newly ▁defined ▁group . ▁Below ▁is ▁a ▁cl ad ogram ▁from ▁before ▁the ▁recognition ▁of ▁the ▁cla de ▁Str uth ios aur inae . ▁ ▁Description ▁ ▁Str uth ios aur ines ▁are ▁well - known , ▁and ▁include ▁one ▁of ▁the ▁best - pres erved ▁species ▁of ▁an k yl osa ur , ▁Europ elta ▁carbon ensis . ▁ ▁O ste od erm s ▁ ▁In ▁ 2 0 0 0 , ▁Ford ▁published ▁a ▁complete ▁description ▁of ▁an k yl osa ur ian ▁o ste od erm s , ▁in ▁which ▁he ▁recognized ▁the ▁group ▁Str uth ios aur inae . ▁Ford ' s ▁description ▁of ▁Str uth ios aur inae ▁was ▁based ▁on ▁the ▁genus ▁Str uth ios aur us . ▁Ford ▁found ▁that ▁Str uth ios