Nautilus Clip art by Gosc Nautilus ExclusiveClip art by Gosc Free Download License: Free for personal and commercial use, with attribution to Stockio.com. Not for sale or redistribution. Facebook Twitter animal shell black and white outline line art contour biology paleontology evolution mollusc nautilus geology extinct palaeontology fossilien geologie palãâ¤ontologie ammonit ammonshorn perlboot ammonite cephalopoda