SIMPLIFIED LIST OF RECENT CLASSES AND ORDERS 14 



Class Subcl Order 



PRIAPULOI DEA 



PRIAPULOIDEA 



Priapulida 



NEMATODA 



nematodes, nemas, thread-worms, round-worms 



NEMATOIDEA 



Enoploidea 



Dorylaimoidea 



Mermithoidea 



Chromadoroidea 



Araeolaimoidea 



Monhysteroidea 



Desmoscolecoidea 



Rhabditoidea 



Rhabdiasoidea 



Oxyuroidea 



Ascaroidea 



Strongyloidea 



Spiruroidea 



Dracunculoidea 



Filarioidea 



Trichuroidea 



Dioctophymoidea 



GOR DIACEA 



gordian-worms, horsehair-worms 



NEMATOMORPHA 



Gordioidea 

 Nectonematoidea 



CALYSSOZOA 



endoprocts 



ENDOPROCTA (Entoprocta) 

 Pedicellinida 



