CHIM^ROID FISHES AND THEIR DEVELOPMENT. 



RECENT Rbinocbirnaera HarrioUa, Callorhyncbus 



! I 



Chimaera 



Sharks 



PLIOCENE 



\ 



MIOCENE 



\Mylognathus 



* \ 



\ 

 V 

 X 



EOCENE 



modus\. 



V 



CRETACEOUS 



\ \ 



Elasmodectes x \ 

 \\ 



JURASSIC 



Chimaeropsis 



fyriacantbus 



Syualora/a ^^. 



TRIASSIC 



\\ 

 \ 



PERMIAN 



\Menaspis 



X V \ v 



X ^V N \ 



CARBONIFEROUS 



Khynchodifs 



\ \ \ 



\ \ \ 



Ptyctodus 



DEVONIAN 



Fig. 144. Phylogeny of the Chimaeroids. Arrangement according to paleontological data. 



