SCIENTIFIC INDEX. 



Ixix 



sociale, 321. 

 Orthopora, 309. 

 Orthothetes, 413. 

 Ostracoda, 122 186. 

 Ostrea congesta, 53. 



Other Cretaceous fossils from Minn., 21. 

 Otodus appendiculatus, 53. 

 Ovicell, 98. 



Pachydictya, 146, 98, 106, 109, 141,147, 148,155,160. 



acuta, 155, 128, 146, 152, 153, 158, 159. 



alcyone, 146. 



arguta, 146. 



bifurcata, 147. 



cmiciliatrix, 160. 



crassa, 146. 



elegans, 154, 15:1, 155, 157. 



emaciata, 147. 



everetti, 146. 



farctus, 147. 



fenestelliformis, 152, 146. 



flmbriata, 152, 146, 155, 157. 



flrma, 141, 146 



foliata, 149, 146, 184, 303. 



frondosa, 103. 



gigantea, 156. 



hexagonalis, 146. 



magnipora, 146. 



obesa, 146. 



occidentalis, 151, 152, 146, 155, 157. 



pumila, 157, 146, 158, 159, 301. 

 var. sublata, 158. 



robusta, 146. 



rudis, 147. 



rustica, 146. 



scitula, 147. 



splendens, 141, 146. 



triserialis, 159, 146, 160 



turgida, 146. 

 Paleschara, 105, 109. 

 Palescharidae, 105. 

 Palinurus, 5. 

 Pasceolus, 68. 



dactylioides, 67. 

 Paterina, 344, 361. 

 Pedicle (ventral) valve. 335. 

 Penniretepora, 106. 

 Pentameridie, 382, 337. 

 Pentamerus, 378. 



galeatus, 378 



hemiplicatus, 382. 

 Perforated diaphragms, 98. 

 Permian, flora, 6, 2; limestone, 3. 

 Peronopora, 106 216, 217, 222, 222, 228. 

 Persea, 5. 



Petalotrypa, 107, 110. 

 Petigopora, 107, 319. 

 Petraia rustica, S3. 

 Phacelopora, 105. 

 Phaceloporidifi, 105. 

 Phtenopora, 173, 106, 109, 145, 162, 163, 172. 176. 



bipunctata, 174. 



constellaria, 174. 



ensiformis, 174, 173. 



excellens, 174. 

 expansa, 173, 166. 



explanata, 173, 174. 



flmbriata, 174. 



incipiens, 174, 162, 172, 173. 



lindstrcemi, 174. 



lonsdalei, 174, 171!. 



magna, 174. 



multifldia, 174. 



multipora, 139, 140. 



punctata, 174. 



superba, 174. 



tenuis, 174. 



wilmingtonensis, 175, 172, 174. 

 Phanemstomum atlanticum, 40. 

 Pharetrones, 77. 

 Pholidops, 376. 



trentonensis, 376. 



var. minor, 376, 377, 467. 

 Phylactolsemata, 105. 

 Phyllites vanona3, 22. 

 Phyllodictya, 141, 106, 142, 143, 147, 148. 



frondosa, 142, 141, 143, 184. 



varia, 144, 138, 140, 142-145. 

 Phyllopora, 106, 208, 209. 



corticosa, 312. 

 Phylloporina, 2O8, 103, 106, 207, 209, 213, 214. 



aspera, 208. 



asperato-striata, 208. 



beds, 129. 



clathrata, 211. 



corticosa, 212, 157, 159, 207, 214, 227, 264, 284. 



dawsoni, 208. 



granistriata, 210. 



halli, 207, 211. 



reticulata, 21O, 208, 211. 



sublaxa, 2O9, 207. 



trentonensis, 208, 207, 210. 

 Phylloporinidae, 2O7, 99, 106, 109, 208. 

 Pinacotrypa, 107, 110, 302. 

 Pinnatopora, 106, 103, 110. 

 Pinus hayesiana, 10. 



quenstedi, 22. 



species, 1O, 9, 22. 

 Placenticeras placenta, 53. 

 Plcesiomys, 420, 421. 



deflecta, 422. 



recta, 422. 



subquadrata, 429. 

 Planorbulina ammonoides, 44. 

 Plants, fossil, from Minn.. 1-22. 

 PlanuMna globigerina, 40. 



incurvata, 45. 



mauryana, 40. 



megalopentas, 40. 



membranacea, 45. 



pachyderma, 41. 



pertusa, 40. 



porotetras, 40. 



repanda var. menardi, 45. 

 subvar. pauperata, 4f>. 



stigma, 40. 

 Platanus, 8, 5, 14. 



heeri, 14. 



primteva, 14, 9, 21, 22. 



