Taxonomy clear
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Furcatolithus predistentusRupelian - Latdorfian
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Sphenolithus milanettiLanghian - Burdigalian
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Furcatolithus intercalarisPriabonian - Bartonian
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Sphenolithus orphanknollensisYpresian
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Furcatolithus distentusChattian - Rupelian
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Furcatolithus humerusChattian - Rupelian
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Furcatolithus peartiaeChattian - Latdorfian
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Furcatolithus ciperoensisChattian - Rupelian
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Furcatolithus obtususBartonian - Lutetian
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Furcatolithus avisChattian
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Furcatolithus ascellaChattian - Rupelian
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Furcatolithus akropodusRupelian - Latdorfian
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Furcatolithus bulbulusChattian
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Furcatolithus celsusChattian - Bartonian
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Sphenolithus radiansRupelian - Thanetian
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Sphenolithus abiesPiacenzian - Langhian
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Sphenolithus pacificusZanclean - Selandian
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Sphenolithus moriformisYpresian - Selandian
