Classification of the genus Grypoceras
G. †Grypoceras Hyatt 1883
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†Grypoceras aemulans Kummel 1953
†Grypoceras bidorsatoides Kummel 1953
†Grypoceras brahmanicum Griesbach 1880
†Grypoceras griesbachi Diener 1895
†Grypoceras guembeli von Mojsisovics 1873
†Grypoceras haloricum von Mojsisovics 1873
†Grypoceras laubei von Mojsisovics 1873
†Grypoceras mesodicum Hauer 1846
†Grypoceras milleri Kummel 1953
†Grypoceras obtusum von Mojsisovics 1873
†Grypoceras palladii Mojsisovics 1886
†Grypoceras quadrangulum Beyrich 1866
†Grypoceras rhaeticum Engeser and Reitner 1992
†Grypoceras whitneyi Gabb 1864
†Nautilus quadrangulus brahmanicus Griesbach 1880