liik
Protarabellites concavus Stauffer, 1933
Klassifikatsioon
| organismirühm | Biota |
| riik | Animalia |
| hõimkond | Annelida |
| klass | Polychaeta |
| selts | Eunicida |
| sugukond | Ramphoprionidae |
| perekond | Protarabellites |
| liik | augustus |
| canadensis | |
| concavus | |
| delectus | |
| diminutus | |
| dubius | |
| excelsus | |
| fidelis | |
| giganteus | |
| glenwoodensis | |
| grandis | |
| hamiltonensis | |
| humilis | |
| intermedius | |
| maturensis | |
| productus | |
| rectangularis | |
| staufferi | |
| tortilis | |
| triangularis |