👉 Placophoran is a genus of invertebrates that belong to the phylum Placodermata. They are characterized by their soft, moist shells, which serve as a protective covering on their bodies. The shells are often composed of calcium carbonate and can be found on various surfaces such as rocks, sand, or even seaweed. Placophoran include some of the most diverse groups of invertebrates on Earth, including jellyfish, brachiopods (octopi),