Complex sentence: Four genera are described in the Treatise (Kummel 1964), "Hercoglossa", "Aturoidea", "Cimonia", and "Deltoidonatilus".
Split into simpler sentences: Four genera are described in the Treatise (Kummel 1964). They are "Hercoglossa", "Aturoidea", "Cimonia", and "Deltoidonatilus".