Classification of Scudder 1878
Fm. †Phyllophoridae
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Fm. Cerambycidae Latreille 1802 [longhorned beetle]
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Or. Lepidoptera Linnaeus 1758 [moth]
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Fm. Corydalidae Leach 1815 [dobsonfly]
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Fm. Panorpidae Latreille 1802 [common scorpionfly]
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Fm. Nemestrinidae Macquart 1834 [tangle-veined fly]
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Fm. Cercopida Leach 1815 [froghopper]
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Subfm. Aphrophorinae Amyot and Audinet-Serville 1843
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G. †Petrolystra Scudder 1878
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†Petrolystra gigantea Scudder 1878
†Petrolystra heros Scudder 1878