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Há 16 horas · Mollusca is the second-largest phylum of invertebrate animals, after Arthropoda; members are known as molluscs or mollusks [a] ( / ˈmɒləsks / ). Around 76,000 extinct species of molluscs are recognized. [3] The number of fossil species is estimated between 60,000 and 100,000 additional species. [4] The proportion of undescribed species is ...
Há 16 horas · Adl et al., 2005 を正規のランク とし、動物 Animalia Linnaeus, 1758 および真正後生動物 Eumetazoa Bütschli, 1910 と同義（後生動物のシノニム）として海綿動物、平板動物、刺胞動物、有櫛動物を含めながらもそれらを除いた左右相称動物を界に相当する階級とした 。
