1082 . 
Sub Order 
Body deep, strongly compressed* Skeleton well ossified, 
cranium with some cartilage* Large front cranial cavity, walls 
chiefly formed by frontals, floor by cartilage containing meses- 
thmoid and orbitosphenoid ossifications; mesethmoid entirely 
posterior to prefrontals; ©pieties separated by supraoccipital* 
Vertebrae 33; ribs strong, attached to well developed downwardly 
directed parapophyses* Post-temporal forked* Pectoral fin rays 
inserted on scapula and on 4 pterygials, one of which in contact with 
coracoid, which not expanded* Pelvic bones not articulated to cora¬ 
coids* Fins with articulated rays, except first two of dorsal, which 
spinous* Dorsal and anal long* Ventral rays 8 or 9* 
