1899] Lambe — On Reptilian Remains. 69 



Also fragments of shell that may represent other species, 

 as well as vertebi.o, terminal phalanges and numerous other 

 bones of the endoskeleton of turtles. 



Besides the above, small pieces of the plastron of P. coales- 

 ccns were collected in 1882 by Mr. R. G. McConncll from the 

 Belly River beds of this district. 



2. Crocodilia — 



Portions of the rami of mandibles of a species of Bot- 

 tosaurus, Agassiz, probably B. pcrrugosus described by Cope 

 from the Fort Union (Laramie) group of Colorada. 



3. Dinosauria — 



a. Tracliodou luirabilis, Leidy. Numerous maxilhe and 

 rami of mandiles, in some cases with the teeth particularly well 

 preserved, as well as a large number of the principal bones of 

 this species. 



Near the mouth of Berry Creek a large horn-core, one foot 

 long and nearly five inches in diameter at the base to which a 

 small part of the skull remained attached, was found with parts 

 of a maxilla holding teeth of the Trachodon type. The horn- 

 core is asymmetrical, and suggests the presence of a pair of 

 well developed horns in the species of Trachodon here re- 

 presented, probably that of T. mirabilis, Leidy, which with its 

 allies have been supposed to be hnrnless. 



b. A maxilla with teeth, a separate tooth and a right 

 ramus, of a species of Triceratops, Marsh. 



c. Separate teeth and terminal phalanges o{ Liclaps incras- 

 satus, Cope. 



d. The upper part of the cranium and a number of dermal 

 plates of a species of Nodosaunis, probably N. textilis, Marsh. 



IL The more important specimens from the Laramie series 

 consist almost entirely of dinosaurian remains and are more 

 fragmentary and not so numerous as those from the Belly River 

 beds : — 



I. The order Chelonia is not represented in the collections 

 from the Laramie of this district, but fragments of a plastron, 

 probably referable to Plastonienus coa/escens, Cope, were found in 



