Category: Zoology Classes Seisonoidea Bdelloidea Monogononta The rotifers make up a phylum of microscopic, pseudocoelomate animals. ... Paramecium is a well-known genus of ciliate protozoa, commonly studied as a representative of that group. ... Typical orders Sessilida Mobilida The peritrichs are a large and distinctive group of ciliate protozoa. ... Genera Actinophrys Actinosphaerium The actinophryids are a small group of heliozoan protists. ... Heliozoa, or sun animalcules, are roughly spherical amoeboids with many stiff, microtubule-supported projections called axopods radiating outward from the cell surface. ... Amoeba (also spelled ameba) is a genus of protozoa that moves by means of temporary projections called pseudopods, and is well-known as a representative unicellular organism. ... In Greek mythology, Proteus is an early sea-god, one of several deities whom Homer calls the Old Man of the Sea, whose name suggests the first, as protogonos is the firstborn. No mention is made of his parents, until for later mythographers he became the son of Poseidon in...