Classification of the genus Turgicephalus
Subg. †Raymondaspis (Turgicephalus) Fortey 1980
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†Raymondaspis (Turgicephalus) neglecta Nielsen 1995
†Raymondaspis (Turgicephalus) whittingtoni Nielsen 1995
†Turgicephalus falcatus Fortey 1980
†Turgicephalus hinlopensis Fortey 1980