Classification of the genus Ischyodon
Subg. †Chimaera (Ischyodon) Agassiz 1843
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†Chimaera (Ischyodon) beaumontii Agassiz 1843
†Chimaera (Ischyodon) brevirostris Agassiz 1843
†Chimaera (Ischyodon) dufrenoyi Agassiz 1843
†Chimaera (Ischyodon) dutertrii Agassiz 1843
†Chimaera (Ischyodon) emarginata Agassiz 1843
†Chimaera (Ischyodon) helvetica Agassiz 1843
†Chimaera (Ischyodon) johnsonii Agassiz 1843
†Chimaera (Ischyodon) tessoni Buckland 1835
†Ischyodon bucklandi Agassiz 1843