NORTH AMERICAN INDEX FOSSILS. 



normalis, is, e, 



Ampyx, m, II 259 



Lonchodomus, f, II 259 

 norwoodi, Granatocrinus, m, II 486 

 noveboracum, Nanno, n, II 45 

 nucleolatus, a, um, 



Uncinulus, m, I 291 



Whitfieldella, f, I 348 

 nuntium, Spyroceras, n, II 64 

 nuptialis, 



Aporrhais, f, I 754 



Lispodesthes, f, I 754 

 nycteis, Triblidium, n, I 604 

 nyssa, Gennaeocrinus, m, II 540 



obesus, a, um, 



Bollia, f, II 352 



Eurychilina, f, II 348 



Pentremites, m, II 482 



Typhis, m, I 786 

 oblata, Rhipidomella, f, I 263 

 obliquatus, a, um, 



Tricoelocrinus, m, II 480 



Whitella, f, I 415 

 obliquus, a, um, 



Arthrostylus, m, I 152 



Cinulia, f, I 808 



Ctenodonta, f, I 394 



Homotrypa, f, I 129 



Trigonarca, f, I 407 

 obliterato-granosus, a, um, 



Cerithium, n, I 748 



Fibula, f, I 748 

 obliteratus, Dolichoderus, m, II 449 

 oblongatus, Nuculites, m, I 398 

 oblongula, Membranipora, f, I 169 

 oblongus, a, um, 



Cypricardella, f. I 535 



Melocrinus, m, II 555 



Pentamerus, m, I 275 



Pleurophorus, m, I 533 

 obovatus, Elaeocrinus, m, II 484 

 obrapum, Fulgur, n, I 769 

 obscurus, a, um, 



Dekayella, f, I 132 



Nymphalites, m, II 454 

 obsolefactus, Capsus, m, II 456 

 obsolescens, Lygseus, m, II 456 

 obsoletus, a, um, 



Acanthonema, n, I 691 



Grammysia, f, I 381 



Limoptera, f, I 422 



Parallelodon, m, I 404 



Tetranota, f, I 613 

 obstrictus, Hamites, m, II 200 

 obticescens, Fulgora, f, II 457 

 obtusus, a, um, 



Acalyptus, m, II 446 



Isotelus, n, II 291 

 occidaneus, Aviculopecten, m, I 490 

 occidens, Phanerotrema, n, I 638 



occidentalis, is, e, 



Actinodesma, n, I 423 



Arctica, f, I 537 



Arctinurus, m, II 308 



Atrypa, f, I 311 



Aviculopecten, m, I 490 



Caprina, f, I 549 



Conchidium, n, I 2y2> 



Corbicula, f, I 544 



Fenestrapora, f, I 145 



Gonioceras, n, II 117 



Haminea, f, I 809 



Hebertella, f, I 255 



Hypsipleura, f, I 739 



Leptobolus, m, I 194 



Lucina, f, I 556 



Pholadomya, f, I 530 



Placenticeras, n, II 219 



Pleurophorus, m, I 533 



Solemya, f, I 375 



Tainoceras, n, II loi 



Thysanocrinus, m, II 547 

 occultata, Mycetophila, f, II 455 

 oceani, Mesothyra, f, II 384 

 octobrachiatus, Dichograptus, m, I 28 

 octolirata, Pyropsis, f, I 767 

 oculifera, Ceratopsis, f, II 352 

 oehlerti, Coelidium, n, I 652 

 ohioensis, is, e, 



Anthracopupa, f, I 821 



Centroceras, n, II 93 



Ceramoporella, f, I 122 



Conocardium, n, I 438 



Labechia, f, I 46 



Paracyclas, f, I 554 



Receptaculites, m, I 19 



Trematoceras, n, II 55 



Trimerella, f, I 191 

 oklahomaensis. Aviculopecten, m, I 492 

 olivaceus, Melampus, m, I 814 

 olorus, Cycloceras, n, II 57 

 omphalodes, Spirorbis, m, II 236 

 oneidaense, Acrophyllum, n, I 60 

 oniscus, Corbula, f, I 575 

 onoense, Phylloceras, n, II 165 

 operculiformis, is, e, 



Entolium, n, I 507 



Pecten, m, I 507 

 oppletum, Vaginoceras, n, II 41 

 orbicularis, Eupachycrinus, m, II 512 

 orbiculatus, Lyriopecten, m, I 494 

 orbignyanus, Discotrochus, m, I 102 

 orcas, Oncoceras, n, II 124 

 orcutti, Coralliochama, f, I 551 

 ordinatus, Chonostegites, m, I 91 

 ordon€zi, Haploceras, n, II 168 

 oregonensis, 



Callianassa, f, II 391 



Schloenbachia, f, II 225 

 originarius, Dizygocrinus, m, II 543 

 ornatissima, Margarita, f,^I 704 



