Classification of Hay 1916
G. †Pycnodus Agassiz 1833
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†Pycnodus comminuens Hay 1916
†Pycnodus planidens Hay 1916
G. †Gomphotherium Burmeister 1837
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†Gomphotherium elegans Hay 1916
†Gomphotherium gratum Hay 1916
Fm. †Pycnodontidae Agassiz 1833
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