Caudofoveata. The classification of molluscs is in the shape of a fine worm. The head and trunk can be clearly distinguished. There is a excretory cavity at the back end of the body, in which there is a pair of pinnate gills. There are no calcareous plates and shells, but the cuticle with calcareous acicular spines is covered. It lives in the sea area with deep mud bottom environment, such as fur shellfish.
- Chinese name
- Caudate
- Foreign name
- Caudofoveata
