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The animal kingdom arranged according to its organization London G Henderson 1834 London London The illustration features a variety of aquatic crustaceans showcasing their intricate anatomies. At the center two species of Cyclops are depicted with detailed annotations. The upper portion highlights Cyclops corrosus presenting a side view with labeled features such as antennae and swimming limbs. Below it is Cyclops reticulatus displayed in a similar orientation. In addition there is a representation of a small insect-like creature possibly a water flea alongside a larger crayfish-like crustacean. Each specimen is meticulously labeled with numbers 1 through 5 indicating their scientific classification and providing a glimpse into the diverse morphology of this animal group. (Photo by: Sepia Times/Universal Images Group via Getty Images)