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Rosy lobsterettes are crustaceans, and all crustaceans are invertebrates. They have an exoskeleton, with no backbone or spinal cord. They belong to the Phylum Arthropoda, which includes organisms such as crustaceans, Spiders, centipedes and millipedes, and insects.

Vertebrates include only some members of the Phylum Chordata: specifically, mammals, birds, fish, reptiles and amphibians.

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11y ago

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