anged ▁from ▁middle ▁Jur ass ic ▁to ▁Mi oc ene , ▁but ▁according ▁to ▁Kra use ▁and ▁colle agues , ▁part ▁of ▁this ▁dis cre p ancy ▁is ▁the ▁result ▁of ▁confusion ▁between ▁two ▁super f icial ly ▁similar ▁rock ▁units ▁that ▁out c rop ▁nearby ; ▁the ▁older ▁one , ▁where ▁T Z - 0 7 ▁is ▁located , ▁is ▁und ou bt edly ▁Mes oz o ic ▁and ▁the ▁younger ▁is ▁C en oz o ic . ▁Based ▁on ▁the ▁presence ▁of ▁non - av ian ▁din osa urs ▁and ▁o ste og loss omorph ▁fish es , ▁Kra use ▁and ▁colle agues ▁assigned ▁T Z - 0 7 ▁to ▁the ▁C ret ace ous ▁( 1 4 6 – 6 6 ▁million ▁years ▁ago ). ▁In ▁ 2 0 0 7 , ▁Nancy ▁Stevens ▁and ▁colle agues ▁identified ▁the ▁unit ▁that ▁produced ▁T N M   0 2 0 6 7 ▁as ▁likely ▁belonging ▁to ▁the ▁middle ▁part ▁of ▁the ▁C ret ace ous ▁( around ▁A pt ian ▁to ▁C en oman ian ). ▁T N M   0 2 0 6 7 ▁is ▁significant ▁as ▁one ▁of ▁the ▁very ▁few ▁m amm als ▁from ▁the ▁C ret ace ous ▁of ▁the ▁southern ▁contin ents ▁( G ond w ana ). ▁ ▁Description ▁ ▁T N M   0 2 0 6 7 ▁is ▁a ▁dam aged , ▁partial ▁left ▁dent ary ▁ ▁( lower ▁j aw ▁b one ). ▁It ▁pres erves ▁much ▁of ▁the ▁body ▁of ▁the