CLASSIFICATION 



FLECTOGNATH 

 HETEROSCMATA 

 DI5C0CEPHAL 

 HYPOSTOMlOES 

 SCLEROPARE 



375 



XENOPTE.RYGII 

 OPISTHOMI 



SYMBRANCHII 

 HAPLODOCI 



PEDICULATI 



FERCOMORPHI 



SALMOPERCAE 

 ALLOTRIOGNATH 

 ANACANTHIN 

 MICROCYPRIN 

 SYNENTOaNATK 

 HETEROM 



OSTARIOPHYSl 



CLADISTIA 



CHONDROSTEll 



B?:LC^!ORMVNCH■i 



ACT!NI5Tl,-V 



from PL LiJriOPTf:F\ YQII 



Y\<g, 135.— PHYLOGENETIC " TREE " OF THE CLASS PISCES (bONY FISHES). 



Sub-classes, orders, and (in some cases) sub-orders are shown. One or two 

 small orders have been omitted. 



