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INDEX.

Ptyohacantlius, 341.Ptychocephalus, 341.Ptychoceras, 313.Ptychodus, 341.Ptycholepis, 342.Ptyehophyllum, 63.Ptylopora, 127.Pullastra, 222.

Pupa, 274.

Purpura, 275.Purpurina, 275.Pustulopora, 127.Putorius, 361.Pycnodus, 342.Pygaster, 88.Pygopterus, 343.Pygurus, 88.Pyramidella, 275.Pyrgia, 63.

Pyrgoma, 96.

Pyrina, 88.Pyritonema, 63.Pyrula, 275.

Pyrulina, 40.Pyxidicula, 26.

Quinqueloculina, 40.

Radiolites, 160.Radiopora, 128.

Raia, 343.Raphiosaurus, 353.Rastrites, 63.Receptaculites, 363.Regnosaurus, 353.Remopleurides, 115.Reptocea, 128.Reptomulticava, 128.Reptotubigena, 128.Retepora, 128.Retiolites, 63.

Retzia, 145.Rhabdocarpus, 19.Rhabdophyllia, 63.Rhabdopora, 52.Rhamnites, 19.Rhaphistoma, 275.Rhinocephalus, 343.Rhinoceros, 361.Rhinolophus, 361.Rhipidolepis, 343.Rhizodus, 343.Rhodocrinus, 88.Rhoncus, 343.Rhynchonella, 145.Rhynchosaurus, 353.Rbyncorbinus, 343.Rimula, 275.

Ringicula, 276.Ringinella, 276.Rissoa, 276.Rissoina, 277.Robulina, 41.Rosalina, 41.Rostellaria, 277.

Rot alia, 41.Rotalina, 41. 1Rotella, 277-Rysosteus, 353.

Sabella, 91.Sagenaria, 19.Sagenocrinus, 89.Sagenopteris, 19.Sagrina, 41.

Salenia, 89.

Salicites, 19.Salicoques, 115.Sanguinolaria, 222.Sanguinolites, 223.Sarcinula, 63.Saurichnis, 355.Saurichthys, 343.Saurocephalus, 343.Saurodon, 344.Sauropsis, 344.Saxicava, 223.Scalaria, 277.Scalpellura, 96.Scaphites, 313.Scaphodus, 344.Schizaster, 89.Schizodns, 188.Schizopteris, 19.Scieenurus, 344.Scissurella, 278.Sclerodus, 344.Scombrinus, 344.Scrobicularia, 223.Seylliodus, 344.Scyphia, 29.Sedgwickia, 224.Selaginites, 19.Semionotus, 344.Seraphs, 278.Serpula, 92.Serpulites, 93.Sertularia, 63.Sigaretus, 278.Sigillaria, 20.

Silurus, 344.Siphodendron, 58, 64.Siphodictyum, 64.Siphonia, 30.Siphoniotyphlus, 128.Siphonotreta, 150,

Smilotrochus, 64.Smithia, 64.Solariella, 278.Solarium, 278.Solaster, 89.Solecurtus, 224.Solemya, 224.

Solen, 224.

Solenites, 20.Soleuostrobus, 20.Sorex, 361.Spalacodon, 361.Spalacotherium, 361.Spatangus, 89.Sphaera, 224.Sphasreda, 21.Sphserexochus, 115.Sphmrococcites, 23.Sphaerodus, 344.Sphseronites, 89.Sphagodus, 344.Sphenacanthus, 344.Sphenia, 225.Sphenonchus, 344.Sphenophyllum, 21.Sphenopteris, 21.Sphenotrochus, 64.Sphyrmnodus, 344.Spinax, 345.Spinigera, 279.Spinopora, 64.Spirifer, 150.Spirigera, 145.Spirillma, 42.Spiroglyphus, 94.Spirolina, 42.Spiroloculina, 43.Spirorbis, 94.Spondylobolus, 133.Spondylus, 182.Spongarium, 362.Spongia, 30.Spongophyllum, 64.Squaloraia, 345.Stagonolepis, 345.Staurocephalus, 115.Steganodictyum, 31.Steneosaurus, 353.Stenopora, 64.Stenostoma, 345.Stephanophyllia, 64.Stereopsammia, 64.Stembergia, 23.Stigmaria, 23.Stomatia, 279.Strephodes, 64.Strepsidura, 279.Streptorhynchus, 154