NO. 1796. A NEW LABYRINTHODONT FROM KANSAS— MOODIE. 



493 



small, slender element located farther forward, where it has been 

 shoved by the large sized internal mandibular foramina. The pre- 

 articular is a rather long, broad element, of which only a portion is 

 preserved. I am not sure as to the location of the suture for the 

 dentary unless it is represented by the line bounding the roughened 

 area near the teeth. If this is true, the dentary is a large element, 

 since it extends well down upon the outer side of the jaw. The 

 dentary possesses evidences of twenty-six teeth, a few of which are 



Fig. 3.— Inner surface of the mandible op Ekpetosuchus kansensis Moodie. ^=angular, 

 4r=articular, z>=dentary, pa=prearticular, s=splenial. 



preserved completely. Most of them are, however, represented 

 either by bases or by impressions in the coal. The teeth are very 

 similar to those of the maxilla, though slightly larger. The char- 

 acters given for the maxillary teeth will suffice for those of the 

 dentary. 



The markings of the inner surface are as indicated in the drawing 

 (fig. 3). The back portion of the angular shows a few radiating 

 lines. The dentary is roughened in two portions; one near the 

 teeth, the other at the tip, where there is a cartilaginous roughening 

 for union with its mate. The remainder of the inner surface is 

 relatively smooth. 



Fig. 4.— Right ramus of mandible of Crocodilus. .4n^=ANGULAK, .4rt=ARTicuLAR, D=dentary, 



SpZ=SPLENIAL, S?tr=C0R0N0ID. 



The outer surface shows at the anterior end the typical labyrintho- 

 dont sculpturing, which becomes slight grooves and ridges posteriorly. 

 I detect evidences of the operculo-mandibular lateral hne oanal 

 throughout the entire length of the mandible. Its location is indi- 

 cated by the heavy broken Une in the drawing (fig. 2) . The suture 

 between the dentary and angular is quite clear. The suture separat- 

 ing the dentary and splenial joins the angular suture about midway 

 of the length of the jaw. 



