NORTH AMERICAN INDEX FOSSILS. 



io6. 



Polypora submarginata, c 



*40. 



*I22. 



Rhombopora lepidodendroides, c 



*44. 

 *74. 





Brachiopoda. 



75. 



*3i. 



Lingula umbonata, c 



*96. 



*50. 



Orbiculoidea convexa, c 



*io5. 



51. 



0. missouriensis, c 



*io6. 



*6i. 



Crania modesta, c 



197. 



*ii4. 



Orthothetes keokuk, c 



*i98. 



*ii5. 



0. crassa, c, d, f 



*203. 



*ii6. 



Meekella striatocostata, c, d, £ 



*22I. 



130. 



Chonetes glaber, c, e 



*222. 



*i3i. 



C. granulifer, c, e, f 



22,7. 



*I32. 



C. mesolobus, c, d, e 



238. 



*i33. 



C. variolatus, c, e 



*239. 



134. 



C. verneuilianus, c, e 



*240. 



*I52. 



Productus semireticulatus, a, b, c, 



*24I. 





d, e, f 



*248. 



*iS3. 



P. cora, a, b, c, d, e, f 



*249. 



154. 



P. costatus, a, b, c, d, e, f 



250. 



155. 



P. inflatus, c, e 



*25I. 



*i56. 



P. longispina, b, c, d, e, f 



*252. 



157. 



P. mexicoanus, d, f 



304. 



*i58. 



P. muricatus, b, c, d, e, f 



305. 



*i59. 



P. nebraskensis, b, c, d, e, f 



306. 



160. 



P. punctatus, a, b, c, d, e, f 



*32i. 



161. 



P. symmetricus, c 



*323. 



*20S. 



Rhipidomella pecosi, c, d, f 



*324. 



213. 



Schizophoria resupinoides, c, e 



*325. 



*2I4. 



Enteletes hemiplicata, c, e 



340. 



*278. 



Pugnax Utah, c, f 



341. 



*298. 



Dielasma bovidens, c, d, £ 



342. 



*324. 



Spiri£erina spinosa, f 



343. 



*325. 



S. kentuckiensis, b, c, d, £ 



344. 



371. 



Spirifer striatus, a, e, £ 



345. 



*372. 



S. cameratus, b, c, d, £ 



346. 



2,73' 



S. rockymontanus, b, c, d, e, £ 



347- 



*38o. 



Reticularia perplexa, b, c, d, f 



348. 



382. 



Martinia glabra, a 



*349. 



*388. 



Ambocoelia planoconvexa, b, c, 



*350. 





d, £ 



*35i. 



*392. 



Hustedia mormoni, c, d, f 



354. 



*4i9. 



Seminula argentea, b, c, d, e, £ 





420. 



S. dawsoni, a 



355. 

 *364. 





Pelecypoda, 



*392. 



4- 



Clinopistha radiata, b, c 



398. 



8. 



Prothyris elegans, c 



404. 



35. 



Cardiomorpha missouriensis, c, f 



444. 



*39. 



Chaenomya leavenworthensis, c, e 



*445. 



C. minnehaha, c 



Edmondia aspinwallensis, b, c, f 



Nucula ventricosa, b, c, d, e 



N. beyrichi, c 



Leda bellistriata, c, e 



Parallelodon tenuistriatus, c, d, f 



P. obsoletus, b, c, d, e 



Aviculopinna americana, c 



A. peracuta, b, c, d, e 



Bakewellia parva, c, d 



Pteria sulcata, c 



P. longa, c 



Monopteria longispina, c, e 



M. gibbosa, b, c 



Pseudomonotis hawni, b, c, e 



P. kansasensis, b, c, d, e 



P. equistriata, c, e 



Myalina congeneris, c 



M. swallovi, c, d, e 



M. recurvirostris, c 



M. subquadrata, e 



M. perattenuata, c, e 



Naiadites carbonarius, a 



Anthracomya elongata, a 



A. Isevis, a 



Schizodus quadrangularis, b 



S. cuneatus, b, c, e, £ 



S. curtus, c 



S. wheeleri, b, c, e 



Aviculopecten coxanus, b, c, d 



A. rectilaterarius, b, c, d, e 



A. pellucidus, c, e 



A. providencesis, b, c 



A. interlineatus, b, c, d 



A. curtocardinalis, e 



A. occidaneus, e 



A. parvulus, e 



A. weberensis, e 



A. occidentalis, b, c, d, e 



A. germanus, c, d 



A. maccoyi, c, d 



Acanthopecten carboni£erus, b, 



c, d, e 

 Euchondria neglecta, b, c 

 Crenipecten winchelli, b 

 Pecten aviculatus, b, c, d, e 

 Lima reti£era, b, c, d 

 Placunopsis carbonaria, b, c 

 Allorisma geinitzi, c 

 A. costatum, c 



