Until a few centuries ago, any large bones discovered in the fields or caves of Europe, now known to be large prehistoric animals, were usually assumed to be the remains of giants and were often displayed as curiosities in castles, palaces, town halls, churches, and monasteries.1. now known to be large prehistoric animals, were usually assumed to be2. presently known as from large prehistoric animals, were usually assumed as3. bones now known to be those of large prehistoric animals, were usually assumed to be4. bones known at present as of large prehistoric animals, were usually assumed as those of5. currently known as those of large prehistoric animals, were usually assumed to be those of