Opinions from H. B. Fell and D. L. Pawson 1966
- 'Acanthechinus belongs to Phymosomatidae'
- 'Acrocidaris belongs to Pseudodiadematidae'
- 'Acropeltis belongs to Arbaciidae'
- 'Acrosalenia belongs to Acrosaleniidae'
- 'Acrosaleniidae belongs to Salenioida'
- 'Acrosaster belongs to Arbaciidae'
- 'Actinophyma belongs to Phymosomatoida'
- 'Aeolopneustes belongs to Phymosomatidae'
- 'Allomma belongs to Hemicidaroida'
- 'Ambipleurus belongs to Glyphocyphidae'
- 'Amblypneustes belongs to Temnopleuridae'
- 'Arachniopleurus belongs to Glyphocyphidae'
- 'Arbacia belongs to Arbaciidae'
- 'Arbaciadae is corrected as Arbaciidae and belongs to Arbacioida'
- 'Arbaciella belongs to Arbaciidae'
- 'Arbacina is corrected as Arbacioida and belongs to Echinacea'
- 'Arbacina belongs to Temnopleuridae'
- 'Arbia belongs to Arbaciidae'
- 'Asterocidaris belongs to Hemicidaridae'
- 'Atactus belongs to Echinidae'
- 'Atopechinus belongs to Arbaciidae'
- 'Baueria belongs to Arbaciidae'
- 'Besairiecidaris [misspelled as Besairecidaris] belongs to Echinacea'
- 'Boletechinus belongs to Phymosomatoida'
- 'Bramus belongs to Echinacea'
- 'Brochechinus belongs to Orthopsidae'
- 'Brochopleurus belongs to Temnopleuridae'
- 'Cidarites pseudodiadema is recombined as Pseudodiadema pseudodiadema'
- 'Cidaropsis belongs to Hemicidaridae'
- 'Circopeltis belongs to Stomechinidae'
- 'Codechinus belongs to Stomechinidae'
- 'Codiopsis belongs to Arbaciidae'
- 'Coelopleurus belongs to Arbaciidae'
- 'Colpotiara belongs to Hemicidaroida'
- 'Cottaldia belongs to Arbaciidae'
- 'Cotteaudia is a nomen vanum'
- 'Crinocidaris belongs to Echinacea'
- 'Dallonia is a nomen nudum'
- 'Desmechinus belongs to Temnopleuridae'
- 'Dialithocidaris belongs to Arbaciidae'
- 'Dictyopleurus belongs to Glyphocyphidae'
- 'Diplechinus belongs to Stomechinidae'
- 'Diplopodia belongs to Pseudodiadematidae'
- 'Diplosalenia belongs to Parasaleniidae'
- 'Diplotagma belongs to Stomechinidae'
- 'Discoidea is a nomen vanum'
- 'Dubarechinus belongs to Orthopsidae'
- 'Dumblea belongs to Pseudodiadematidae'
- 'Echinidae belongs to Echinoida'
- 'Echinocyphus belongs to Temnopleuridae'
- 'Echinoida belongs to Echinacea'
- 'Echinometra belongs to Echinometridae'
- 'Echinometradae is corrected as Echinometridae and belongs to Echinoida'
- 'Echinopluteus is a nomen nudum'
- 'Echinopsis belongs to Glyphocyphidae'
- 'Echinotiara belongs to Stomechinidae'
- 'Echinus belongs to Echinidae'
- 'Ellipsechinus is a subjective synonym of Echinometra'
- 'Erbechinus belongs to Temnopleuridae'
- 'Eurypneustes belongs to Hemicidaridae'
- 'Evechinus belongs to Echinometridae'
- 'Firmacidaris is a nomen dubium'
- 'Gagaria belongs to Temnopleuroida'
- 'Gajechinus is a nomen nudum'
- 'Gauthieria belongs to Phymosomatidae'
- 'Genocidaris belongs to Temnopleuridae'
- 'Glyphocyphinae was reranked as the family Glyphocyphidae and belongs to Temnopleuroida'
- 'Glyphocyphus belongs to Glyphocyphidae'
- 'Glyphopneustes belongs to Hyposaleniinae'
- 'Glyptechinus belongs to Temnopleuridae'
- 'Glypticus belongs to Arbaciidae'
- 'Glyptocidaris belongs to Phymosomatidae'
- 'Glyptocyphus belongs to Phymosomatidae'
- 'Glyptodiadema belongs to Glyphocyphidae'
- 'Gomphechinus belongs to Stomechinidae'
- 'Goniophorus belongs to Hyposaleniinae'
- 'Goniopygus belongs to Arbaciidae'
- 'Goniosigma belongs to Temnopleuridae'
- 'Gracilechinus belongs to Echinidae'
- 'Grammechinus belongs to Temnopleuridae'
- 'Graphepleurus belongs to Temnopleuridae'
- 'Gymnocidaris belongs to Hemicidaridae'
- 'Gymnodiadema belongs to Orthopsidae'
- 'Hebertia is a subjective synonym of Echinopsis'
- 'Hemicidaridae belongs to Hemicidaroida'
- 'Hemicidarina was reranked as the order Hemicidaroida and belongs to Echinacea'
- 'Hemicidaris belongs to Hemicidaridae'
- 'Hemidiadema belongs to Glyphocyphidae'
- 'Hemithylus belongs to Phymosomatidae'
- 'Hemitiaris belongs to Hemicidaridae'
- 'Hessotiara belongs to Hemicidaridae'
- 'Heterocentrotus belongs to Echinometridae'
- 'Heterodiadema belongs to Hemicidaridae'
- 'Heteropodia belongs to Arbaciidae'
- 'Heterosalenia belongs to Acrosaleniidae'
- 'Hypechinus belongs to Echinidae'
- 'Hypodiadema belongs to Pseudodiadematidae'
- 'Hyposalenia belongs to Hyposaleniinae'
- 'Hyposaleniinae belongs to Saleniidae'
- 'Idiocidaris belongs to Hyposaleniinae'
- 'Irenechinus belongs to Temnopleuridae'
- 'Isechinus belongs to Echinidae'
- 'Jacquiertia belongs to Phymosomatidae'
- 'Jeannetia belongs to Stomechinidae'
- 'Lambertechinus belongs to Phymosomatidae'
- 'Leiocyphus belongs to Temnopleuridae'
- 'Leptechinus belongs to Phymosomatidae'
- 'Leptopleurus belongs to Temnopleuridae'
- 'Loriolia belongs to Pseudodiadematidae'
- 'Lysechinus belongs to Tiarechinidae'
- 'Lytechinus belongs to Toxopneustidae'
- 'Magnosia belongs to Arbaciidae'
- 'Martinechinus belongs to Temnopleuridae'
- 'Medocechinus is a subjective synonym of Ambipleurus'
- 'Microcyphus belongs to Temnopleuridae'
- 'Microdiadema belongs to Pseudodiadematidae'
- 'Micropsidia is a subjective synonym of Micropsis'
- 'Micropsis belongs to Phymosomatidae'
- 'Monodiadema belongs to Acrosaleniidae'
- 'Murravechinus is a nomen nudum'
- 'Narindechinus belongs to Phymosomatidae'
- 'Noetlingaster belongs to Stomechinidae'
- 'Nudechinus belongs to Toxopneustidae'
- 'Oligophyma belongs to Toxopneustidae'
- 'Ombria is a nomen nudum'
- 'Opechinus belongs to Temnopleuridae'
- 'Orthocidaris belongs to Orthopsidae'
- 'Orthopsina was reranked as the order Orthopsida and belongs to Echinacea'
- 'Orthopsinae was reranked as the family Orthopsidae and belongs to Orthopsida'
- 'Orthopsis belongs to Orthopsidae'
- 'Paracentrotus belongs to Echinidae'
- 'Paradoxechinus belongs to Temnopleuridae'
- 'Parasalenia belongs to Parasaleniidae'
- 'Parasaleninae was reranked as the family Parasaleniidae and belongs to Echinoida'
- 'Pedinopsis belongs to Pseudodiadematidae'
- 'Phymechinus belongs to Stomechinidae'
- 'Phymosoma belongs to Phymosomatidae'
- 'Phymosomatidae belongs to Phymosomatoida'
- 'Phymosomina was reranked as the suborder Phymosomatoida and belongs to Echinacea'
- 'Phymotaxis belongs to Stomechinidae'
- 'Pleiocyphus belongs to Arbaciidae'
- 'Plesiocidaris belongs to Hemicidaridae'
- 'Plesiocidaroida belongs to Echinacea'
- 'Pleurechinus is a nomen nudum'
- 'Pleurodiadema belongs to Phymosomatidae'
- 'Podocidaris belongs to Arbaciidae'
- 'Polycyphus belongs to Stomechinidae'
- 'Polydiadema belongs to Pseudodiadematidae'
- 'Polysalenia belongs to Acrosaleniidae'
- 'Poropeltaris belongs to Hyposaleniinae'
- 'Porosoma belongs to Phymosomatidae'
- 'Printechinus belongs to Temnopleuridae'
- 'Prionechinus belongs to Temnopleuridae'
- 'Progonechinus belongs to Glyphocyphidae'
- 'Protocidaris is a nomen dubium'
- 'Psammechinus belongs to Echinidae'
- 'Psephechinus belongs to Stomechinidae'
- 'Pseudarbacia belongs to Stomechinidae'
- 'Pseudarbacina belongs to Temnopleuridae'
- 'Pseudechinus belongs to Temnopleuridae'
- 'Pseudoboletia belongs to Toxopneustidae'
- 'Pseudocentrotus belongs to Toxopneustidae'
- 'Pseudocidaris belongs to Hemicidaridae'
- 'Pseudodiadema belongs to Pseudodiadematidae'
- 'Pseudodiadematidae belongs to Hemicidaroida'
- 'Pseudodicoptella belongs to Temnopleuridae'
- 'Pseudosalenia belongs to Acrosaleniidae'
- 'Pygmaeocidaris belongs to Arbaciidae'
- 'Rachiosoma belongs to Phymosomatidae'
- 'Radiocyphus belongs to Glyphocyphidae'
- 'Radiolus is an invalid subgroup of Echinoidea'
- 'Recrosalenia belongs to Acrosaleniidae'
- 'Salenia belongs to Saleniinae'
- 'Salenidia belongs to Saleniidae'
- 'Salenies is corrected as Saleniidae and belongs to Salenioida'
- 'Saleniinae belongs to Saleniidae'
- 'Salenina is corrected as Salenioida and belongs to Echinacea'
- 'Salenocidaris belongs to Saleniidae'
- 'Salmacis belongs to Temnopleuridae'
- 'Scaptodiadema belongs to Orthopsidae'
- 'Schizechinus belongs to Toxopneustidae'
- 'Scolechinus belongs to Temnopleuridae'
- 'Scoliechinus belongs to Toxopneustidae'
- 'Spaniocyphus belongs to Echinoida'
- 'Sphaerechinus belongs to Toxopneustidae'
- 'Sphaerotiaris belongs to Hemicidaridae'
- 'Stirechinus belongs to Echinidae'
- 'Stomechiens is corrected as Stomechinidae and belongs to Phymosomatoida'
- 'Stomechinus belongs to Stomechinidae'
- 'Stomopneustes belongs to Stomechinidae'
- 'Strongylocentrotidae belongs to Echinoida'
- 'Strongylocentrotus belongs to Strongylocentrotidae'
- 'Temnechinus belongs to Temnopleuridae'
- 'Temnopleuridae belongs to Temnopleuroida'
- 'Temnopleurina was reranked as the order Temnopleuroida and belongs to Echinacea'
- 'Temnopleurus belongs to Temnopleuridae'
- 'Temnotrema belongs to Temnopleuridae'
- 'Tetragramma belongs to Pseudodiadematidae'
- 'Tetrapygus belongs to Arbaciidae'
- 'Thierychinus belongs to Stomechinidae'
- 'Thylechinus belongs to Phymosomatidae'
- 'Tiarechinidae belongs to Plesiocidaroida'
- 'Tiarechinopsis belongs to Stomechinidae'
- 'Tiarechinus belongs to Tiarechinidae'
- 'Tiaromma belongs to Pseudodiadematidae'
- 'Toxopneustes belongs to Toxopneustidae'
- 'Toxopneustidae belongs to Temnopleuroida'
- 'Triadechinus belongs to Stomechinidae'
- 'Triplacidia belongs to Temnopleuridae'
- 'Tripneustes belongs to Toxopneustidae'
- 'Trisalenia belongs to Saleniidae'
- 'Trochalosoma belongs to Stomechinidae'
- 'Trochodiadema belongs to Hemicidaroida'
- 'Trochoechinus belongs to Echinoida'
- 'Trochotiara belongs to Pseudodiadematidae'
- 'Valsalenia belongs to Saleniidae'
- 'Vernius is a nomen dubium'
- 'Zenocentrotus belongs to Echinometridae'
- 'Zeuglopleurus belongs to Temnopleuridae'