FIELD E ; Taxonomy Code 

 Columns 18, 19, 20, 21, 

 22, 23, 24, and 25 



(X) 



Al and A2 



AA 



(X 



(1 



(X 



Myelozoa (syn. Leptocardil, class of phylum Chordata) (equals Leptocardii, 



subphylum of phylum Vertebrata) 

 Craniata, subphylum of phylum Vertebrata 

 Anamnia, sub- subphylum of subphylum Craniata 

 Anamnia, subdivision of division Craniata (equals Anamnia, sub- subphylum of 



subphylum Craniata) 

 Pisces, superclass of subdivision Anamnia 

 Agnatha, superclass of sub- subphylum Anamnia 

 Agnatha, class of superclass Pisces (equals Agnatha, superclass of sub- subphylum 



Anamnia) 

 Cephalaspidomorphi, subclass of superclass Pisces 

 Cyclostomata, order of subclass Cephalaspidomorphi (equals Cyclostomata, class 



of superclass Agnatha) 

 Cyclostomata (syn. Marsipobranchii), class of superclass Agnatha 

 Marsipobranchii (syn. Cyclostomata, class of superclass Agnatha) 

 Marsipobranchii, class of phylum Chordata (equals Marsipobranchii, class of 



superclass Agnatha) (equals Petromyzones plus Myxini, classes of superclass 



Agnatha) 

 Cyclostomi (syn. Marsipobranchii, class of Chordata) (equals Marsipobranchii, 



class of superclass Agnatha) (equals Petromyzones plus Myxini, classes of 



superclass Agnatha) 

 Petromyzones, class of superclass Agnatha 



Hyperoartii (syn. Petromyzones, class of superclass Agnatha) 

 Hyperoartia, order of Marsipobranchii, class of Chordata (equals Petromyzones, 



class of superclass Agnatha) 

 Petromyzoniformes, order of class Petromyzones 

 Petromyzontia, suborder of order Cyclostomata (equals Petromyzoniformes, order 



of class Petromyzones) 

 Petromyzonidae, family of Petromyzoniformes, order of Petromyzones 

 Petromyzonidae, family of Hyperoartia, order of Marsipobranchii (equals family 



Petromyzonidae, family of Petromyzoniformes) 

 Petromyzon marinus 

 Myxini, class of superclass Agnatha 



Hyperotreti (syn. Myxini, class of superclass Agnatha) 

 Myxiniformes, order of class Myxini 

 Hyperotreta, order of Marsipobranchii, class of Chordata (equals Myxini, class of 



superclass Agnatha) 

 Myxinoidea, suborder of order Cyclostomata (equals Myxiniformes, order of class 



Myxini) 

 Hyperotreti (syn. Myxinoidea, suborder of order Cyclostomata) (equals 



Myxiniformes, order of class Myxini) 

 Gnathostomata, superclass of sub- subphylum Anamnia 

 Chondrichthyes, class of superclass Pisces (is included in Gnathostomata, 



superclass of sub- subphylum Anamnia) 

 Gnathostomata, class of superclass Pisces (equals class Chondrichthyes plus 



class Osteichthyes of superclass Pisces) (equals Gnathostomata, superclass of 



sub- subphylum Anamnia) 

 Pisces, series of Gnathostomata 

 Elasmobranchii, class of series Pisces 

 Elasmobranchii, subclass of class Chondrichthyes (equals Elasmobranchii, class 



of series Pisces) 

 Elasmobranchii, class of phylum Chordata (equals Elasmobranchii, class of 



series Pisces) 

 Selachii, subclass of class Elasmobranchii 

 Selachii, order of subclass Elasmobranchii (equals Selachii, subclass of class 



Elasmobranchii) 

 Euselachii (syn. Selachii, subclass of class Elasmobranchii) 

 Plagiostomi (syn. Selachii, subclass of class Elasmobranchii) 

 Selachoidei, superorder of subclass Selachii 

 Pleurotremata (syn. Selachoidei, superorder of subclass Selachii) 



- 44 



