Originally: (A. S. Hyatt's name for) a member of a grade of primitive multicellular animals characterized by a simple central cavity with…
| 单词 | θ33509 |
| 释义 | the world > animals > invertebrates > subkingdom Metazoa > [noun] > member of > member of Protocoelomata (1) protocoelomate1884 Originally: (A. S. Hyatt's name for) a member of a grade of primitive multicellular animals characterized by a simple central cavity with… |
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