. ▁Although ▁long ▁cla ws ▁are ▁known ▁in ▁modern ▁birds ▁of ▁pre y , ▁bo hai orn ith ids ▁had ▁short ▁t ars omet at ars als ▁( ank le ▁b ones ) ▁which ▁were ▁dis similar ▁to ▁most ▁ra pt ors ▁with ▁the ▁exception ▁of ▁members ▁of ▁the ▁sub family ▁P ern inae . ▁ ▁Among ▁birds ▁of ▁pre y , ▁bo hai orn ith ids ▁had ▁leg ▁proport ions ▁most ▁similar ▁to ▁o spre ys , ▁and ▁thus ▁it ▁is ▁conce iv able ▁that ▁they ▁were ▁p isc iv orous . ▁However , ▁their ▁teeth ▁suggest ▁a ▁di et ▁of ▁hard - sh elled ▁cre atures . ▁ ▁Classification ▁ ▁The ▁cl ad ogram ▁below ▁was ▁found ▁in ▁the ▁ph y log en etic ▁analysis ▁of ▁Wang ▁et ▁al . ▁ 2 0 1 4 , ▁which ▁itself ▁was ▁an ▁updated ▁version ▁of ▁O ’ Con nor ▁et ▁al . ▁ 2 0 1 3 . ▁The ▁cl ad ogram ▁is ▁based ▁on ▁a ▁data ▁matrix ▁that ▁includes ▁ 5 6 ▁av ial an ▁tax a , ▁scored ▁based ▁on ▁ 2 6 2 ▁morph ological ▁tra its . ▁ ▁The ▁Wang ▁et ▁al . ▁ph y log en etic ▁analysis ▁was ▁re used ▁during ▁the ▁description ▁of ▁Lin yi orn is ▁in ▁ 2 0 1 6 . ▁This ▁study ▁it ▁indicated ▁that ▁previously ▁known ▁bo hai orn ith id ▁tax a ▁formed ▁a ▁pol yt omy ▁with ▁Lin yi orn is ▁and ▁Fort ung u av is , ▁supporting