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Included On The Following Pages:

• Life (creatures)
• Cellular (cellular organisms)
• Eukaryota (eukaryotes)
• Opisthokonta (opisthokonts)
• Metazoa (Animal)
• Bilateria
• Protostomia (protostomes)
• Spiralia (spiralians)
• Mollusca (molluscs)
• Gastropoda (snails)
• Caenogastropoda (An order of snails)
• Littorinimorpha
• Truncatelloidea
• Hydrobiidae (spring snails)
• Hydrobiinae
• Hydrobia
• Hydrobia acuta

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