8UB-CLASS V 



GANOIDEI 



77 



I 



schiefer of Thuringia and Eiechelsdorf, Hesse ; also found in the Upper 

 Permian of England, France, and Russia. 



Elonichthys, Giebel (Bhabdolepis, Troschel ; Cosmoptychius, Traquair), (Figs. 

 137, 138). Teeth of difl'erent sizes. Fins large, with fulcra, and the rays 

 distally divided. Dorsal in front of the anal fin. Scales rhombic, obliquely 

 sculptured. E. germari, Gieb., from Goal Measures of Saxony. Other species 



Fig. 137. 



Elonichthys (Cosmoptychiun) 

 striatus, Ag. sp. Scale Iroiu 

 outer {A\ and inner (B) aspects, 

 three tinies nat. size. J^ower 

 Carbo7iiferoiis ; f Edinburgh 

 (aller Traquair). 



Fig. 138. 



Elonichthys (lihabdolepis) macropterus, Bronn sp.' Lower Permian (Roth- 

 liegenden) , Lebacli, near Saarbrücken, Rhenish Prussia (restoratiou after 



Agassizi. s 



Gyrolepis ornatus, Gieb. 

 1. Muschel- 

 kalk ; Esperstädt (after 

 Dam es). 



from the Carboniferous of England, Scotland, and North America ; also from 

 the Lower Permian of Rhenish Prussia and Bohemia. 



Acrolepis, Ag. Closely resembling Elonichthys, but scales more deeply over- 

 lapping. A. sedgwicki, Ag., from Upper Permian (Marl Slate of Durham and 

 Kupferschiefer of Germany). Other species in Carboni- 

 ferous of England, Scotland, and Belgium. 



Gyrolepis, Ag. (Fig. 139). Anterior rays of pectoral 

 fins not articulated. Operculum deep and narrow. Scales 

 marked with irregulär oblique and curved rugae. Common ^^^- ^^^ 



in the Muschelkalk and Ehaetic Bone-bed, but usually sdSSarg, 

 only isolated scales. 



Myriolepis, Egerton. Scales very small. M. clarkei, 

 Eg., from Trias (Hawkesbury Formation), New South Wales. An allied fish 

 in the Goal Measures of Kilkenny, Ireland. 



Oxygnathus, Egerton (Thrissonotus, Cosmolepis, Egerton). Fins large, with 

 small fulcra. Pectoral fin rays only articulated distally. Dorsal in front of 

 anal fin. Scales small, but thick, obliquely sculptured. 0. ornatus, Eg., from 

 Lower Lias, Lyme Regis. 



Centrolepis, Egerton. Lower Lias ; Lyme Regis. 



Atherstonia, Sm. Woodw. Trias (Karoo Formation) ; Colesberg, South 

 Africa. 



Coccolepis, Ag. Scales thin, rounded, and very deeply overlapping; orna- 

 mented with tubercles. Fulcra minute or absent. Dorsal in front of anal fin. 

 Small species in the Upper Jurassic Lithographie Stone of Bavaria {C. hiLck- 

 landi, Ag.), the Purbeck Beds and Lower Lias of England. A larger species 

 {C. australis, Sm. Woodw.) in the Hawkesbury-Wianamatta Formation of New 

 South Wales. Only known Palaeoniscid ranging above the Lias. 



Cryphiolepis, Traquair. Fins large, with fulcra. Scales large and thin, 



