▁was ▁probably ▁dam aged ▁in ▁an ▁accident , ▁but ▁had ▁he aled . ▁ ▁Y uba atar ▁was ▁found ▁to ▁be ▁bas al ▁to ▁the ▁cla de ▁Ta eni ol ab ido idea , ▁which ▁consists ▁of ▁North ▁American ▁and ▁Asian ▁mult it uber cul ates ; ▁this ▁indicates ▁there ▁was ▁a ▁fa unal ▁inter change ▁between ▁Asia ▁and ▁North ▁America ▁before ▁the ▁C ret ace ous – P ale ogene ▁transition . ▁The ▁morph ology ▁of ▁Y uba atar ▁indicates ▁that ▁divers ity ▁in ▁the ▁complexity ▁of ▁the ▁teeth ▁of ▁mut it uber cul ates , ▁rel ating ▁to ▁their ▁di ets , ▁increased ▁with ▁the ▁number ▁of ▁gener a ▁and ▁difference ▁in ▁body ▁size , ▁and ▁that ▁there ▁wa ▁sa ▁shift ▁in ▁adapt ations ▁towards ▁increased ▁her b iv ory ▁in ▁the ▁group ▁across ▁the ▁C ret ace ous – P ale ogene ▁boundary . ▁ ▁References ▁ ▁Category : C ret ace ous ▁m amm als ▁Category : C im ol od ont s ▁Category : F oss il ▁tax a ▁described ▁in ▁ 2 0 1 5 ▁Category : F oss ils ▁of ▁China <0x0A> </s> ▁A ▁skin ▁tag , ▁or ▁ac ro ch ordon ▁( pl . ▁ac ro ch ord a ), ▁is ▁a ▁small ▁ben ign ▁tum or ▁that ▁forms ▁primarily ▁in ▁areas ▁where ▁the ▁skin ▁forms ▁cre ases ▁( or ▁rub s ▁together ), ▁such ▁as ▁the ▁neck , ▁ar mp it ▁and ▁gro in . ▁They ▁may ▁also ▁occur ▁on ▁the ▁face , ▁usually