👉 Polyzoaria is a genus of marine invertebrates that belong to the class Chordata. It includes the following species: 1. Polyzoaridae: This family consists of over 400 species, which are mainly characterized by their unique body plan and skeletal arrangement. 2. Polyzoa: This family also includes a variety of other marine invertebrates, such as the polychaete worms (Polychaetae) and the sea cucumbers (