(Younginiformes,(Endennasaurus,(Askeptosaurus,(Hescheleria,(Nectosaurus,(Clarazia,(Thalattosaurus,(Paralonectes,Ankistrognathus)))))))); (Younginiformes,(Askeptosaurus,(Endennasaurus,(Hescheleria,(Nectosaurus,(Clarazia,(Thalattosaurus,(Paralonectes,Ankistrognathus))))))));