Valvatida and Velatida and two extinct ones, Calliasterellidae and Trichasteropsida. Living asteroids, the Neoasteroidea, are morphologically distinct... 104 KB (11,240 words) - 21:20, 9 March 2024 |
Valvatida and Velatida and two extinct ones, Calliasterellidae and Trichasteropsida. Living asteroids, the Neoasteroidea, are morphologically distinct... 104 KB (11,240 words) - 21:20, 9 March 2024 |