Classification of the genus Hipponyx
G. Hipponix Defrance 1819
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Subg. Hipponix (Malluvium) Melvill 1906
Subg. Hipponix (Pilosabia) Iredale 1929
Hipponix antiquatus Linnaeus 1767
Hipponix conicus Schumacher 1817
†Hipponix demissus Cox 1952
†Hipponix dichotomus Gabb 1864
†Hipponix interruptus Michelotti 1861
†Hipponix pristinus Zinsmeister 1983
Hipponix tumens Carpenter 1864
†Hipponyx ainamurensis Abbass 1967
†Hipponyx carpenteri Arnold 1908
†Hipponyx ceras Woodring 1928
†Hipponyx conoides Abbass 1967
†Hipponyx cornucopae Lamarck 1802
†Hipponyx costata Erdmann and Morra 1985
†Hipponyx gomai Abbass 1967
†Hipponyx ovalis Abbass 1967
†Hipponyx pygmaea Lea 1833
†Hipponyx woodi Abbass 1967