Classification of Downs 1952
G. †Gomphotherium Burmeister 1837
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†Gomphotherium fricki Peterson 1928
†Gomphotherium gregorii Frick 1933
†Gomphotherium osborni Barbour 1916
†Gomphotherium phippsi Cook 1928
†Gomphotherium willistoni Barbour 1914