With the new fossil, researchers can now identify the animals as part of the annelid worm family, which also includes modern sea mice, earthworms and leeches.

• 因为这个新的化石，研究人员现在可以鉴别出该动物属于环节虫属，这类动物中包括现代的海毛虫，蚯蚓和水蛭。