 The maxilla of Paranthodon preserves the tooth row , and shows that there is little to no overhang . This differs from ankylosaurians , where there is a large amount of overhang of the maxilla . The teeth also have a middle ridge , with five fewer prominent ridges on either side . This is similar to the size ridges seen on Kentrosaurus . Like all stegosaurians , the denticles on the teeth are rounded at the tips , in contrast to ankylosaurians . Also , like Huayangosaurus , but unlike Kentrosaurus and Stegosaurus , Paranthodon possesses a prominent buccal margination ( a ridge beside the tooth row ) . Paranthodon teeth preserve wear , possibly cause by rubbing with other teeth . However , wear is absent on most teeth , similar to Huayangosaurus , meaning it is likely that Paranthodon lacked occlusion between teeth . Paranthodon is distinguished from other stegosaurs by a long , wide , posterior process of the premaxilla , teeth in the maxilla with a very large cingulum , and large ridges on the tooth crowns . Not all of these features were considered valid in a 2008 review of Stegosauria , with the only autapomorphy found being the possession of a partial second bony palate on the maxilla . 
 The maxilla of Paranthodon <a href='uninflect' title='1'><mark>preserves</mark></a> the tooth row , and <a href='uninflect' title='2'><mark>shows</mark></a> that <a href='dey_it' title='3'><mark>there</mark></a> is little to no overhang . This <a href='uninflect' title='4'><mark>differs</mark></a> from ankylosaurians , where <a href='dey_it' title='5'><mark>there</mark></a> is a large amount of overhang of the maxilla . The teeth also <a href='got' title='6'><mark>have</mark></a> a middle ridge , with five fewer prominent ridges on either side . This <a href='drop_aux' title='7'><mark>is</mark></a>similar to the size ridges seen on Kentrosaurus . Like all stegosaurians , the denticles on the teeth are rounded at the tips , in contrast to ankylosaurians . Also , like Huayangosaurus , but unlike Kentrosaurus and Stegosaurus , Paranthodon <a href='uninflect' title='8'><mark>possesses</mark></a> a prominent buccal margination ( a ridge beside the tooth row ) . Paranthodon teeth preserve wear , possibly cause by rubbing with other teeth . However , wear <a href='drop_aux' title='9'><mark>is</mark></a>absent on most teeth , similar to Huayangosaurus , meaning it is likely that Paranthodon lacked occlusion between teeth . Paranthodon is distinguished from other stegosaurs by a long , wide , posterior process of the premaxilla , teeth in the maxilla with a very large cingulum , and large ridges on the tooth crowns . Not all of these features <a href='uninflect' title='10'><mark>were</mark></a> considered valid in a 2008 review of Stegosauria , with the only autapomorphy found being the possession of a partial second bony palate on the maxilla . 
Da maxilla of Paranthodon preserve tdatooth row , and show that it is little to no overhang . dis differ from ankylosaurians , where it is a large amount of overhang of the maxilla . The teeth also got a middle ridge , witt five fewer prominent ridges on either side . Tdissimilar to the size ridges seen on Kentrosaurus . Like all stegosaurians , the denticles on thdaeef are rounded at the tips , in contrast to ankylosaurians . Also , like Huayangosaurus , but unlike Kentrosaurus and Stegosaurus , Paranthodon possess a prominent buccal margination ( a ridge beside the tooth row ) . Paranthodon teeth preserve wear , possibly cause by rubbing with other teeth . However , wear absent on most tteef, similar to Huayangosaurus , meaning it is likely that Paranthodon lacked occlusion between teeth . Paranthodon is distinguished from other stegosaurs by a long , wide , posterior process of thedaemaxilla , teteefn the maxilla w/ a very large cingulum , and large ridges on the tooth crowns . Not all of dese features was considered valid in a 2008 review of Stegosauria , with the only autapomorphy found being the possession of a partial second bony palate on the dailla .