Valvatida and Velatida and two extinct ones, Calliasterellidae and Trichasteropsida. Living asteroids, the Neoasteroidea, are morphologically distinct... 104 KB (11,276 words) - 19:10, 17 April 2024 |
Valvatida and Velatida and two extinct ones, Calliasterellidae and Trichasteropsida. Living asteroids, the Neoasteroidea, are morphologically distinct... 104 KB (11,276 words) - 19:10, 17 April 2024 |