Classification of Lespérance and Desbiens 1995
G. †Ceraurus Green 1832
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†Ceraurus globulobatus Bradley 1930
†Ceraurus matranseris Sinclair 1947
Invalid names: Bufoceraurus Hessin 1989 [synonym]
G. †Gabriceraurus Pribyl and Vanek 1985
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†Gabriceraurus dentatus Raymond and Barton 1913
G. †Physemataspis Evitt and Tripp 1977
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Subg. †Physemataspis (Prophysemataspis) Lespérance and Desbiens 1995
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†Physemataspis (Prophysemataspis) uncatus Evitt and Tripp 1977
Subfm. †Encrinurinae Angelin 1854
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G. †Frencrinuroides Lespérance and Desbiens 1995
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†Frencrinuroides capitonis Frederickson 1964
†Frencrinuroides gibber Dean 1979
G. †Walencrinuroides Lespérance and Desbiens 1995
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†Walencrinuroides gelaisi Lespérance and Desbiens 1995
†Walencrinuroides lapworthi Tripp 1980
†Walencrinuroides rarus Walcott 1877
Subg. †Erratencrinurus (Erratencrinurus) Krueger 1971
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†Erratencrinurus (Erratencrinurus) vigilans Hall 1847