Phascolosomatidea
| Phascolosomatidea | |
|---|---|
| Phascolosoma turnerae | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Annelida |
| Class: | Sipuncula |
| Subclass: | Phascolosomatidea |
| Orders | |
Phascolosomatidea is a subclass of the class Sipuncula, the peanut worms, containing two orders:-
- Aspidosiphonida containing the single family Aspidosiphonidae
- Phascolosomatida containing the single family Phascolosomatidae
Their hooks are arranged in regular rings.