GANOIDEI. 



371 



FiKST Family — Caturid^. 



Notocliord persistent, ivith partially ossified vertchw ; liomo- 

 cercal ; fins loith fulcra. Teeth in a single series, small, pointed. 



Fig. 148. — Catunis furcatus (Solenhofen). 



Extinct. Caturus from the Oolite to the Chalk. 



Second Family — Leptolepid/e. 



Scales cycloid. Vertehrcv ossified ; homocercal ; fins without 

 fulcra ; dorscd short. Teeth tninnte, in hands, with canines in 

 front. 



Extinct, and leading to the living representative of this 

 suborder. Thrissops with the dorsal fin placed far backwards, 

 and opposite to the long anal. Leptolepis with the dorsal fin 



Fig. 149. — Leptolepis sprattiforinis. 



opposite to the ventrals, from the Lias and Oolite. These 

 fishes, as far as the preserved parts are concerned, cannot be 

 distinguished from Teleosteous fishes, to which they are 

 referred by some Palaeontologists. 



Third Family — Amiid^e. 

 Skeleton entirely ossified ; a single large gular plate ; homo- 



