Classification of the subgenus Siphonochelus (Siphonochelus)
Subg. Siphonochelus (Siphonochelus) Jousseaume 1880
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†Siphonochelus (Siphonochelus) cercadicus Maury 1917
Siphonochelus (Siphonochelus) longicornis Dall in Agassiz 1888