Classification of Oppel 1811

Superfm. Colubroidea Oppel 1811
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Fm. Colubridae Oppel 1811 [colubrid snake]
Fm. Viperidae Oppel 1811 [viper]
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Subfm. Crotalinae Oppel 1811 [pit viper]
Subfm. Viperinae Oppel 1811