Definition: Ascidiozoa, also known as ascidianomorphs, are a group of organisms that belong to the class Ascidiopsida. These organisms are characterized by their ability to form ascidial structures or shells made from an outer layer of calcium carbonate. Ascids are commonly found in marine environments and can be found in various habitats such as seashells, corals, and rocks. Ascidiozoa have evolved a unique adaptation that allows them to survive in the extreme
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