▁that ▁it ▁was ▁a ▁close ▁relative ▁of ▁Op ab in ia — although ▁this ▁interpretation ▁was ▁later ▁question ed ▁by ▁D zik , ▁who ▁instead ▁concluded ▁that ▁My os co lex ▁was ▁an ▁ann el id ▁w orm . ▁ ▁Description ▁▁ ▁Op ab in ia ▁looked ▁so ▁strange ▁that ▁the ▁audience ▁at ▁the ▁first ▁presentation ▁of ▁Wh itt ington ' s ▁analysis ▁laughed . ▁The ▁length ▁of ▁Op ab in ia ▁reg alis ▁from ▁head ▁to ▁tail ▁r anged ▁between ▁ ▁and ▁. ▁The ▁animal ▁also ▁had ▁a ▁h ollow ▁prob os cis , ▁whose ▁total ▁length ▁was ▁about ▁one - third ▁of ▁the ▁body ' s ▁and ▁project ed ▁down ▁from ▁under ▁the ▁head ▁and ▁then ▁cur ved ▁for wards ▁and ▁up wards . ▁The ▁prob os cis ▁was ▁stri ated ▁like ▁a ▁vac u um ▁cleaner ' s ▁h ose ▁and ▁probably ▁flexible , ▁and ▁it ▁ended ▁with ▁a ▁cla w - like ▁structure ▁whose ▁inner ▁edges ▁bore ▁sp ines ▁that ▁project ed ▁in wards ▁and ▁for wards . ▁The ▁head ▁bore ▁five ▁eyes : ▁two ▁on ▁stal ks ▁near ▁the ▁front ▁and ▁fairly ▁close ▁to ▁the ▁middle ▁of ▁the ▁head , ▁pointing ▁up wards ▁and ▁for wards ; ▁two ▁larger ▁eyes , ▁also ▁st alk ed , ▁near ▁the ▁rear ▁and ▁outer ▁edges ▁of ▁the ▁head , ▁pointing ▁up wards ▁and ▁side ways ; ▁and ▁a ▁single ▁eye ▁with ▁a ▁shorter ▁st alk ▁between ▁the ▁larger ▁pair ▁of ▁st alk ed ▁eyes , ▁pointing ▁up wards . ▁It ▁has