环节动物为无脊椎动物中一个重要门类，包括蚯蚓、蚂蟥、沙蚕等蠕形动物。而其中最重要分支——多毛类是现代海洋中最为繁盛的动物类群之一，对于维持海洋底栖及浮游生态系统的稳定具有重要的作用。作为寒武纪生命大...
annelid is one of the most important categories in invertebrates, including earthworms, leeches, worms and other Vermes. One of the most important branches of the species, the most prosperous in the modern ocean, is one of the most important branches of the species, which plays an important role in maintaining the stability of marine benthic and pelagic ecosystem. As the life of the cambrian...
