Animal Encyclopedia With Facts, Pictures, Definitions, and More!
Unlike invertebrates, vertebrates (members of the subphylum Vertebrata) form a scientific group in animal classification. Most people know that crabs are crustaceans, but the group contains many other types of animals, including lobsters, shrimps, krill and water fleas. It is estimated that there may be as many as 10 million extant (living) species in total […]
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