Definition: Squamellates are a group of animals that include jellyfish, which belong to the family Squamulidae. These animals have soft bodies and have a hard outer shell made of calcium carbonate. They are often found in saltwater environments, such as oceans or marine habitats. The term "squamellate" is derived from the Greek word "squama," meaning "shell," which is used to describe the hard outer shells of these animals. These shells are composed of calcium
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