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| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| the offspring of a zebra and a donkey. |
| branchiopod (brāng'kē-ə-pŏd') Pronunciation Key
Any of various primitive aquatic crustaceans of the class Branchiopoda, such as the fairy shrimp and water flea. Branchiopods are characterized by flattened, leaflike thoracic appendages. |
branchiopod
any of the roughly 900 species of the class Branchiopoda (subphylum Crustacea). They are aquatic animals that include brine shrimp, fairy shrimp, tadpole shrimp, water fleas, and other small, chiefly freshwater forms
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