 Ceratopsia was coined by Othniel Charles Marsh in 1890 to include dinosaurs possessing certain characteristic features , including horns , a rostral bone , teeth with two roots , fused neck vertebrae , and a forward @-@ oriented pubis . Marsh considered the group distinct enough to warrant its own suborder within Ornithischia . The name is derived from the Greek κερας / keras meaning ' horn ' and οψις / opsis meaning ' face ' . As early as the 1960s , it was noted that the name Ceratopsia is actually incorrect linguistically and that it should be Ceratopia . However , this spelling , while technically correct , has been used only rarely in the scientific literature , and the vast majority of paleontologists continue to use Ceratopsia . As the ICZN does not govern taxa above the level of superfamily , this is unlikely to change . 
 Ceratopsia was coined by Othniel Charles Marsh in 1890 to include dinosaurs possessing certain characteristic features , including horns , a rostral bone , teeth with two roots , fused neck vertebrae , and a forward @-@ oriented pubis . Marsh considered the group <a href='uninflect' title='1'><mark>distinct</mark></a> enough to warrant its own suborder within Ornithischia . The name is derived from the Greek κερας / keras meaning ' horn ' and οψις / opsis meaning ' face ' . As early as the 1960s , it was noted that the name Ceratopsia is actually incorrect linguistically and that it should be Ceratopia . However , this spelling , while technically correct , <a href='been_done' title='2'><mark>has</mark></a> been used only rarely in the scientific literature , and the vast majority of paleontologists continue to use Ceratopsia . As the ICZN <a href='uninflect' title='3'><mark>does</mark></a> not govern taxa above <a href='None' title='4'><mark>the</mark></a><a href='negative_concord' title='5'><mark>level</mark></a> of superfamily , this <a href='drop_aux' title='6'><mark>is</mark></a>unlikely to change . 
Ceratopsia was coined by Othniel Charles Marsh in 1890 to include dinosaurs possessing certain characteristic features , including horns , a rostral bone , teef with 2 roots , fused neck vertebrae , and a forward @-@ oriented pubis . Marsh considered the group distincted enough to warrant its own suborder within Ornithischia . da name is derived from tdaGreek κερας / keras meaning ' horn ' and οψις / opsis meaning ' face ' . As early as thda960s , it was noted that the name Ceratopsia is actually incorrect linguistically and that it should be Ceratopia . However , dis spelling , while technically correct , done been used only rarely in the scientific literature , and thedast majority of paleontologists continue to use Ceratopsia . As the daN do not govern taxa above no level of superfamily , tdisunlikely to change .