43 Group questions (Labs 3 and 4) Another idea for classification lab - dealing with controversy: 1. Although they exhibit bilateral symmetry as larvae, until recently adult echinoderms were considered to possess pentaradial symmetry.  The currently-held opinion is that due to the position on the madreporite, these animals are actually bilateral.  Using your observations about the organisms on display,.... 2. Until recently, birds were considered to be a separate class from reptiles, but are now classified along with the reptiles,... Use the questions originally developed for the individual assignment