207 



V. Dorsal mrt.ehra and frontuLs unkown; haaca of some dental crowns 

 swollen : 

 Clidastes intermedius, Leicly. 



Prococdiuss of tUo Acaacny of IMuhulclpbia, 1870 (January); Kcpoit ou tb. lluitea States 

 Gcolo{;ical Survey of the Territories, 1873, I, v. 281, Vlatc XXXIV, figs. 1-5. 



Rotten limestone, Pickens County, ALabanui, "No. 4.'' 



SIRONECTES, Cope. 



bulletin of the United States Geological Survey of tbo Territories, lf<74, No. "i, l-. :!1. 

 SlUONECTES ANGULIFElUJS, Cope. Plate8 XXIII, figs. IC-IS ; XXIV, flj,rs. 1-U. 

 L. c, p. 34. 



Niobrara Cretaceous of Kansas. 



PLATECARPUS, Cope. 



Extiuc-t Uatraobia and Keptilia of Nortb America, 1870, w 18^., I'J'J ; Proceedings of ''''^ ^cademy of I'Uila- 

 delpbii 1872, p. U\.-nokodm, Copo, ncc Gibbsii, Troceediugs of tbo American Pb,los< pb.u.l boci- 

 ety, 1871, Dcceml.er.--tf.')(osa«)»s, Mar.sb, American Journal of Soioncc alul Arts, 1872 (Juno); (sei*- 

 arata, p. 9). 



a. The staiKdLal pit incloml he f ween ridges: 



PLATECARPUS ICTEKICUS, Cope. Plates XIV, lis. : XV, fig. 2 ; XXII, figs. 3, 1 ; 



XVIII, tig. G; XIX, fig. 9; XX. fig. 1 ; XXV ; XXXVI, fig. 7 ; XXXVII, fig. 8. 



IM,.Klu» ictcricm, Cope, Proceedings of tbo American Pbilosopbical Society, 1670, 577, and 



1871, December.-iesfosaiinis Iciericus, Marsb, American Journal ot Science and Arts, 



1872, .^n\w 



Niobrara chalk of riic 8iiioky Hill Kiv.T. 



PLATECARPUS CORYPii.EUS, Cope. Plates XIV, fig. 3; XV, fig. 1 ; XVI, fig. 1; 

 XVII, fig. G; XX, fig. 4; XXI, tigs. 1, 2; XXXVI, fig. G; XXXVII, fig. 9. 



Uohodm cowft«,.s, Cope, Proceedings of tbe Anierican Pbilosopbical Society, 1671, Decem- 

 ber.— i«s(osaM>-H.i coryplKciis, Marsh, /. c. 



Niobrara chalk of the Biiioky Hill River. 

 PlatecaPvPUS TYMPANiTicus, Cope. Plate XXXVII, fig. 11. 



Proceedings of tbe Boston Society of Natur.al History, ISft., p. 2(m ; Extinct Batracbia and 

 Rep.ilia of Nortb America, 1870, p. 200.-//«;c..;«,s «.«/,*».,'' Gi '^-."L-'y- "' 1-^; 

 Cretaceous Reptiles of tbe United States, ].. 118, Plate Vll, 4 / ; VUl, b^. 1---/. 

 XI, 14. 



Cretaceous, No. !, of Mississippi. 



PLATECARPUS FELIX, Marsll. 



to(o,«mn,., /,;,>, Marsb, American Journal of Science and Arts, 1872, .June, Table Xlll, f.g. 4. 



Niol)rara chalk of the Smoky Hill River, Kansas. 



