Opinions from N.C. Hughes 1994
- 'Asaphida belongs to Libristoma'
- 'Dikelocephalacea belongs to Asaphida'
- 'Dikelocephaliidae belongs to Dikelocephalacea'
- 'Dikelocephalus belongs to Dikelocephaliidae' according to N.C. Hughes 1994
- 'Dikelocephalus barretti belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus barretti is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus beani belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus beani is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus brevis belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus brevis is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus declivis belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus declivis is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus edwardsi belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus edwardsi is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus gracilis is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus gracilis belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus granosus belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus granosus is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus halli belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus hotchkissi belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus hotchkissi is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus inaequalis belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus inaequalis is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus intermidius belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus intermidius is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus juvinalis belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus juvinalis is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus marginatus belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus marginatus is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus minnesotensis belongs to Dikelocephalus'
- 'Dikelocephalus norwalkensis belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus norwalkensis is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus orbiculatus belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus orbiculatus is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus ovatus belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus ovatus is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus oweni belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus oweni is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus postrectus belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus postrectus is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus raaschi belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus raaschi is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus regalis belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1940
- 'Dikelocephalus regalis is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus retrorsus belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus retrorsus is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus subplanus belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus subplanus is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus thwaitesi belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus thwaitesi is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus weidmani belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus weidmani is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus wiltonensis belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus wiltonensis is a subjective synonym of Dikelocephalus minnesotensis'
- 'Dikelocephalus wisconensis belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus wisconsinensis belongs to Dikelocephalus' according to E.O. Ulrich and C.E. Resser 1930
- 'Dikelocephalus wisconsinensis is a subjective synonym of Dikelocephalus minnesotensis'
- 'Libristoma belongs to Trilobita'
- 'Ogygia minnesotensis belongs to Ogygia' according to E.J. Chapman 1856
- 'Ogygia minnesotensis is a subjective synonym of Dikelocephalus minnesotensis'