PERSON@1 -LRB- MISC@1 , `` no jaws '' -RRB- is a class or superclass of jawless fish in the phylum LOCATION@1 , subphylum Vertebrata .

PERSON@1 -LRB- `` no jaws '' -RRB- is a paraphyletic superclass of jawless fish in the chordate , subphylum of the vertebrates .
