Alethodontus is an extinct genus of holocephalan cartilaginous fish from the Hettangian stage of the Jurassic period. It is known from a single species, A. bavariensis, known from Germany.Duffin, C. J., & Milan, J. (2017). A new myriacanthid holocephalian from the Early Jurassic of Denmark. Bulletin of the Geological Society of Denmark, 65, 161-170.
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