28.2: Phylum Cnidaria Last updated Mar 6, 2021 Save as PDF 28.1C: Physiological Processes in Sponges 28.2A: Phylum Cnidaria Page ID13703 BoundlessBoundless ( \newcommand{\kernel}{\mathrm{null}\,}\) Topic hierarchy28.2A: Phylum Cnidaria28.2B: Class Anthozoa28.2C: Class Scyphozoa28.2D: Class Cubozoa and Class Hydrozoa