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    Paxillosida, Spinulosida, Valvatida and Velatida and two extinct ones, Calliasterellidae and Trichasteropsida. Living asteroids, the Neoasteroidea, are morphologically...
    104 KB (11,240 words) - 21:20, 9 March 2024
  • Thumbnail for List of echinoderm orders
    Superorder Valvatacea Notomyotida Paxillosida Valvatida Velatida † Calliasterellidae † Trichasteropsida Xyloplax janetae (Peripodida) Novodinia antillensis...
    10 KB (468 words) - 04:45, 24 June 2023