Opinions from S. Nisiyama 1968
- 'Cassidulus belongs to Cassidulidae'
- 'Clypeaster belongs to Clypeasteridae'
- 'Clypeaster japonicus belongs to Clypeaster' according to Döderlein 1885
- 'Clypeaster japonicus belongs to Clypeaster'
- 'Clypeaster saipanicus belongs to Clypeaster' according to Cooke 1957
- 'Clypeaster saipanicus belongs to Clypeaster'
- 'Clypeaster virescens belongs to Clypeaster' according to Döderlein 1885
- 'Clypeaster virescens belongs to Clypeaster'
- 'Echinanthus humilis belongs to Echinanthus' according to Leske 1778
- 'Echinanthus humilis is recombined as Clypeaster humilis'
- 'Echinocyamus belongs to Fibulariidae'
- 'Echinocyamus crispus belongs to Echinocyamus' according to Mazzetti 1893
- 'Echinocyamus crispus belongs to Echinocyamus'
- 'Echinocyamus prostratus belongs to Echinocyamus'
- 'Echinolampas belongs to Echinolampadidae'
- 'Echinolampas alexandri belongs to Echinolampas' according to Loriol 1876
- 'Echinolampas alexandri belongs to Echinolampas'
- 'Echinolampas bombos belongs to Echinolampas'
- 'Echinolampas jacquemonti belongs to Echinolampas' according to d'Archiac and Haime 1854
- 'Echinolampas jacquemonti is recombined as Echinolampas oviformis jacquemonti'
- 'Echinolampas yoshiwarai belongs to Echinolampas' according to Loriol 1902
- 'Echinolampas yoshiwarai belongs to Echinolampas'
- 'Echinus reticulatus belongs to Echinus' according to Linnaeus 1758
- 'Echinus reticulatus is recombined as Clypeaster reticulatus'
- 'Fibularia belongs to Fibulariidae'
- 'Fibularia acuta belongs to Fibularia' according to Yoshiwara 1898
- 'Fibularia acuta is recombined as Fibularia (Fibulariella) acuta'
- 'Fibularia cribellum belongs to Fibularia' according to Meijere 1904
- 'Fibularia cribellum belongs to Fibularia'
- 'Fibulariella was reranked as Fibularia (Fibulariella) and belongs to Fibularia'
- 'Gitolampas belongs to Pliolampadidae'
- 'Gitolampas sendaica belongs to Gitolampas'
- 'Ilarionia yoshiwarai belongs to Ilarionia' according to Loriol 1902
- 'Ilarionia yoshiwarai is recombined as Cassidulus yoshiwarai'
- 'Oligopodia okinawa belongs to Oligopodia' according to Cooke 1954
- 'Oligopodia okinawa is recombined as Studeria okinawa'
- 'Pygurus belongs to Clypeidae'
- 'Pygurus (Pygurus) complanatus belongs to Pygurus (Pygurus)' according to Tanaka 1965
- 'Pygurus (Pygurus) complanatus is recombined as Pygurus complanatus'
- 'Pygurus asiaticus belongs to Pygurus' according to Tokunaga 1903
- 'Pygurus asiaticus belongs to Pygurus'
- 'Sismondia belongs to Fibulariidae'
- 'Sismondia convexa belongs to Sismondia' according to Nisiyama 1937
- 'Sismondia convexa belongs to Sismondia'
- 'Sismondia javana belongs to Sismondia'
- 'Sismondia javana ladronensis belongs to Sismondia javana'
- 'Studeria belongs to Pliolampadidae'