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 | ... RATOPSIDE ... (6 elements)fr (1) : CERATOPSIDES pt (4) : CERATOPSIDEA · CERATOPSIDEAS · CERATOPSIDEOS sv (1) : CERATOPSIDER |
 | CERATOPSIDEA · CERATOPSIDEAS · CERATOPSIDEOS · CERATOPSIDER · CERATOPSIDES ... RATOPSID ... (18 elements) ARCHAEOCERATOPSIDAE · CERATOPSIDAE · CERATOPSIDEA · CERATOPSIDEAS · CERATOPSIDEOS · CERATOPSIDER · CERATOPSIDES · LEPTOCERATOPSIDAE · PROTOCERATOPSID · PROTOCERATOPSIDAE |
 | ... ERATOPSIDE ... (6 elements) CERATOPSIDEA · CERATOPSIDEAS · CERATOPSIDEOS · CERATOPSIDER · CERATOPSIDES ... RATOPSIDEA ... (2 elements) CERATOPSIDEA · CERATOPSIDEAS ... RATOPSIDEO ... (2 elements) CERATOPSIDEOS ... RATOPSIDER ... (1 element) CERATOPSIDER ... RATOPSIDES ... (1 element) CERATOPSIDES |