INDEXICAL LIST OF FOSSILS. 



257 



Pinnatopora vinei, II, 31. 

 Pinnatopora youngi, II, 31. 

 Placunoposis carbonaria, II, 108. 

 Platyceras acutirostre, II, 190. 



Syn. Orthonjchia acutirostre. 

 Platyceras biserialis, II, 177. 



Syn. Capulus bieerialis. 

 Platyceras boonvillense, II, 189. 



Syn. Orthonychia boonvillense. 

 Platyceras capulus, II, 183. 



Syn. Igoceras capulus. 

 Platyceras chesterense, II, 191. 



Syn. Orthonychia chesterense. 

 Platyceras cyrtolites, II, 188. 



Syn. Orthonychia cyrtolites. 

 Platyceras equilatera, II, 178. 



Syn. Capulus equilateralis. 

 Platjeeras extinctor, II, 184. 



Syn Igoceras pabulocrinus. 

 Platyceras fissurella, II, 186. 



Syn. Igocera? fissurella. 

 Platyceras formosum, II, 189. 



Syn. Orthonychia formosum. 

 Platyceras haliotoides, II, 174. 



Syn. Capulus haliotoides. 

 Platyceras infundibulum, II, 184. 



Syn. Igoceras pabulocrinus. 

 Platyceras laevigatum, II, 180. 



Syn. Capulua ovalis. 

 Platyceras latum, II, 176. 



Syn. Capulus latus. 

 Platyceras missonriensia, II, 182. 



Syn. Igoceras quincyense. 

 Platyceras nasutum, II, 175. 



Syn. Capulus paralius. 

 Platyceras nebrascense, II, 180. 



Syn. Capulus parvus. 

 Platyceras obliquum, II, 177. 



Syn. Capulus obliquus. 

 Platyceras paralium, II, 174. 



Syn. Capulus paralius. 

 Platyceras pettiense, II, 182. 



Syn. Igoceras quincyense. 

 Platyceras pyramidatum, II, 181. 



Syn. Igoceras pyramidatum. 

 Platyceras quincyense, II, 182. 



Syn. Igeceras quincyenee. 

 Platyceras reversum, II, 195. 



Syn. Strophostylus re versus. 



G 20 



Platycera spirale, II, 188. 



Syn. Orthonychia spirale. 

 Platyceras subrectum, II, 184. 



Syn. Igoceras pabulocrinus. 

 Platyceras eubsinuosum, II, 173. 



Syn. capulus subsiauosus. 

 Platyceras subundatum, II, 173. 



Syn. Capulus subsinuosus. 

 Plats ceras tribulosum, II, 175. 



Syn. Capulus tribulosus. 

 Platyceras uncum, II, 190. 



Syn. Orthonychia acutirostre. 

 Platycrinus acclivus, I, 198. 



Syn. Platycrinus planus. 

 Platycrinus absentivus, I, 196. 

 Platycrinus aequalis, I, 200. 

 Platycrinus aequiternus, I, 196. 

 Platycrinus aettrnalis, I, 201. 



Svn. Platycrinus bonoensis. 

 Platycrinus allophylus, 1 196. 

 Platycrinus amabilis, I, 199. 



Syn. Platycrinus americanus. 

 Platycrinus americanus, I, 199. 

 Platycrinus annosus, I, 196. 

 Platycrinus batiola, I, 200. 



Syn. Platycrinus asqualis. 

 Platycrinusblairi, 1,225. 



Doubtful. 



Platycrinus bonoensis, I, 201. 

 Platycrinus boonvillensis, I, 202. 

 Platycrinus brittsi, I, 195. 

 Platycrinus broadheadi, I, 195. 



Syn. Platycrinus americanus. 

 Platycrinus burlingtonensis, I, 200. 

 Platycrinus carchesium, 1, 198. 



Syn. Platycrinus pileiformis. 

 Platycrinus cavus, I, 197. 



Syn. Platycrinus discoideus. 

 Platycrinus chouteauensis, I, 225. 



Doubtful . 

 Platycrinus colletti, I, 225. 



Doubtful. 

 Platycrinus concinnus, I, 225. 



Doubtful. 



Platycrinus discoideus, I, 197. 

 Platycrinus excavatus, I, 197. 



Syn. Platycrinus discoideus. 

 Platycrinus exsertus, I, 200 



Syn. Platycrinus burlingtonensis 



