104 



Actinopterygii Protospondyli. 



zel 



FIG. 146. Restoration of Head of Chondrosteus acipcnscroides, Ag. (after Traquair) ; Lower 



Lias, Lyine Regis. 



ay, angular bone ; br, branchiostegal rays ; c7i, ceratohyal ; c?, clavicle: d, dentary bone 

 of mandible ;/, frontal ; km, hyomandibular ; j.jugal; i.cl, infraclavicle ; mx, maxilla) ' 

 op, operculum ; p, parietal; />./, postfrontal; p.t, post-temporal; x.cl, supraclavicle ; 

 s.o, suborbital ; g.op, suboperculum ; s.t, supratemporal; sg, squamosal. 



FIG. 147. Dapedius politus, Leach ; Lower Lias, Lyme Regis, Dorset. 



FIG. \48.L(pidotm maximus, Wagn. ; Lithographic Stone (Upper Oolite), Bavaria. 



