44 



CATALOG OF FOSSIL FISHES IN THE MUSEUM 



are clearly shown (fig. 12, s), the others being weathered 

 away. The lowermost one has a diameter of 3.5 mm., 

 and is situated about midway between the tip of the beak 

 and the basal margin. 



Measurements cm. 



Height at beak (lower margin slightly restored) 8 



Length, as far as preserved 11 



Depth of functional portion slightly restored) 6 



E 1960 Posterior blade of a right mandible, a part of it represented 

 only by the impression (PL 8, fig. 2). 



Fig. 12. Dinickthys magnificus, n. sp. Anterior Extremity of a Left Man- 

 dible, IN IisnsrER View. Symphyseai, Denticle. X |. E 1936 



This specimen differs somewhat from the blade portion 

 of other dinichthyid mandibles, and perhaps belongs 

 to this species. It is of about the size to go with the 

 • functional portion of a mandible described above (E 

 1936). It is interesting to note that near the lower 

 margin of the blade is a scar apparently inflicted by 

 the teeth of another animal, the plate having been com- 

 pletely bitten through. 



E 1937 An imperfect large left postero-superognathal (PI. 9, fig. 3). 

 The area worn by the secondary mandibular cusp is 

 situated farther back than is usual, thus indicating that 

 the second cusp of the mandible was relatively far back; 



