Child Hierarchical Categories

Amphibian Anatomy Amphibian Behavior Amphibian Biology Amphibian Classification Amphibian Diets Amphibian Evolution Amphibian Habitats Animal Anatomy Animal Behavior Animal Biology Animal Classification Animal Diets Animal Evolution Animal Habitats Animal Species Extinct Amphibians Extinct Animals Fossil Species Paleozoology Prehistoric Amphibian Species Prehistoric Animal Anatomy Prehistoric Animal Behavior Prehistoric Animal Classification Prehistoric Animal Diets Prehistoric Animal Species Prehistoric Ecosystems Prehistoric Habitats Prehistoric Wildlife

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