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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Protostomia (protostomes)
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Annelida (segmented worms)
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Class Clitellata
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Order Branchiobdellida
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Family Cambarincolidae
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Genus Pterodrilus
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Species Pterodrilus alcicornus
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Species Pterodrilus cedrus
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Species Pterodrilus choritonamus
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Species Pterodrilus distichus
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Species Pterodrilus hobbsi
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Species Pterodrilus mexicanus
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Species Pterodrilus missouriensis
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Species Pterodrilus simondsi
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