Classification of the family Spirulirostridae
Fm. †Spirulirostridae Naef 1921
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G. †Spirulirostra d'Orbigny 1842
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†Spirulirostra curta Tate 1894
†Spirulirostra georgii Fornasiero and Vicariottio 1997
G. †Spirulirostridium Naef 1922
Invalid names: Belemnosinae Wiltshire 1869 [empty], Spirulirostrinae Naef 1921 [empty]