INDEX. 



PAGE 

 PETALODONTID./E 31 



Petalodont genera, Synopsis of 31 



Petalodus 31, 35 



Petalodus destructor 35 



— linguifer 37 



Petalorhynchus 32, 40 



Petalorhynchus striatus 40 



Petrodus 70 



Petrodus acutus 72 



— occidentalis 70 



Petrospongia 145, 233, 262 



PlNNULARIA 461 



Platycrinus 170, 264 



Platycrinus penicillus 266 



— plenus 267 



— Prattenanus 264 



— subspinosus 173 



Pleurocrinds 172, 173 



Pleurophorus 347 



Pleurophorus subcostatus 347 



Pleurtomaria 260, 303, 351 



Pleurotomaria brazoensis 354 



— chesterensis 303 



— granato-costata 356 



— Pratteni 357 



— scitula 353 



— Shumardi 260 



— speciosa 352 



— subconstricta 351 



— subscalaris 360 



— subsinuata 358 



— tenuicincta 355 



— ? tumida ...361 



— turbiniformis 359 



Pcecilodus ornatus 95 



— rugosus 94 



Polypora 421 



Polypora gracilis 422 



— Halliana 421 



— hamiltonensis 423 



Polyphemopsis 372 



Polyphemopsis inornata 374 



— nitidula 374 



— peracuta 375 



Polyrhizodus 34, 49 



Polyrhizodus dentatus 50 



— ponticulus 51 



Polyrhizodus porosus 49 



Polyzoa, descriptions of 412 



Poteriocrinus 179 237 



Poteriocrinus Swallovi 183 



Productus 280, 297, 320 



Productus nanus 320 



— parvus 297 



— scitulus 280 



Protozoa 145, 262, 233 



Psammodus 107 



Psammodus angularis 107 



— porosus? 107 



— reticulatus 109 



— ? rhomboideus 110 



— rugosus 108 



— ? semicylindricus 109 



Pterinea 339 



Pterinea (Monopteria) gibbosa 340 



Pterotocrinus 288 



Pterotocrinus chesterensis 292 



— crassus 290 



Radiata 147, 167, 234, 263, 288, 310 



Ehinodus 106 



Rhinodus calceolus 106 



Rhynchonella 153 



Rhynchonella missouriensis 153 



Rhizodus 18 



Rhizodus occidentalis 19 



St. Louis Group, Invert. Fossils of. 262 



Sandalodus 102 



Sandalodus angulatus 103 



— carbonarius 104 



— grandis 105 



— lagvissimus 104 



— parvulus 102 



— spatulatus 103 



Section I. Vertebrates 9 



Section II. Invertebrates 143 



Section III. Plants 425 



Selaginites 446 



Selaginites crassus 446 



— uncinnatus 446 



Scaphiocrinus 237 



Scaphiocrinus decadactylus 238 



Schizodus 301, 345 



