Phascolosomatidea
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| Phascolosomatidea | |
|---|---|
 | |
| Phascolosoma turnerae | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Annelida |
| Class: | Sipuncula |
| Subclass: | Phascolosomatidea |
| Orders | |
Phascolosomatidea is a subclass of the class Sipuncula, the peanut worms,[1] containing two orders:-[2]
- Aspidosiphonida containing the single family Aspidosiphonidae
- Phascolosomatida containing the single family Phascolosomatidae
Their hooks are arranged in regular rings.[3]
