Vertebra, of Ophiuroidea, [481], [491];

of Streptophiurae, [491], [494];

of Ophioteresis, [481], [491];

of Ophiohelus, [491], [493];

of Zygophiurae, [491];

of Ophiothrix fragilis, [480];

of Ophiarachna, [481];

of Cladophiurae, [491], [500];

of Astroschema, [481];

of Gorgonocephalus, [491];