1306 



NEW YORK STATE MUSEUM 



Platyceras (continued) 



dumosum, 1205. 



gebhardi, 1059, 1204, 1208. 

 cf. magnificum, 1059. 



cf. gibbosum, 1061. 



lamellosum, 1204, 1208. 



nodosum, 1204, 1208. 



pernodosum sp % nov., 1204, 1208. 



platystomum, 1057, 1204, 1208. 



reflexum, 1204, 1208. 



cf. retrorsum, 1057. 



subnodosum, 1057. 



cf. trilobatum, 1067. 



unguiforme?, 1057. 



ventricosum, 1059. 

 Platyostoma sp., 1191. 



sp.?, 1191, 1208. 



belial, 911. 



lineata, 911. 

 Plectambonites sericea, 1181. 

 Pleurodictyum lenticulare, 1203, x206. 

 Pleurotomaria?, 1140. 

 Pleurotomaria, 912-13. 



sp. 1117, 1119, 1127 



capillaria mut. pygmaea, 912-13. 

 explanation of plate, 1246.* 



itys mut. pygmaea, 913. 

 explanation of plate, 1246.J 



subdepressa, 1119 1120, 1123. 1126, 

 1127, 1128, 1133, 1134. 

 Pohlman, cited, 1103, 1108. 

 Point Gratiot shales, exposures, 1029. 

 Poleumita cf. crenulata, 1117, 1127, 



1128. 



Pontobdellopsis, 1234. 

 Pope Hollow conglomerate, 976, 977, 

 987. 



Port Ewen (Kingston) beds, 1063-68; 

 thickness, 1034; fauna, 1197; ex- 

 posures near Rondout, 1193-97, 

 1221, 1222, 1223, 1225. 



Port Ewen and Oriskany beds, limit 

 between, 1200. 



Port Ewen and New Scotland beds, 

 resemblance between, 1196. 



Portage formation, upper boundary, 

 853 ; between the Genesee valley and 

 Lake Erie, stratigraphy of, 1000-29; 

 exposures, 1007, 1010, 1011, 1012, 

 1013, 1015, 1018, 1019, 1029. 



Portage sandstones, thickness, 1010. 



Portage jshales, 853. 



Portage time, geographic prov-nces 



during, 866. 

 Portland shales, exposures, 1029. 

 Potsdam sandstone, sedentary impres- 

 sion, of "tne animal whose trail is 



known as Climactichnites, 959-66 

 Pottsville beds, 982-84, 986. 

 Prismodictya choanea, 993. 



prismatica, 993. 

 ProducteUa, 907, 1020, 1027. 



costatula, 992. 



lachrymosa, 992, 993. 



onusta, 992. 



speciosa, 992. 



spinulicosta, 907. 

 mut. pygmaea, 907. 



explanation of plate, 1242. 

 P-oteus sp. undet., 1118, 1128, 1144, 

 1151. 



sp.?, 1191, 1208. 



conradi, 1208. 



pachydermatus, 1173. 



protuberans, 1188, 1191, 1208. 

 ^rotonympha salicifolia, 1237. 



explanation of plates, 1292-94. 

 Protospongia, 938. 



sp., 937. 



fenestrata, 938, 952. 

 Pseudoniscus roosevelti, 868, 108! 

 Pterinea sp., 1085. 

 communis, 1164. 

 emacerata, 1085, 1151, 1173. 

 securiformis, 1117, 1119, 1120, 1122, 



1127, 1128. 

 subplana, 1117, 1127, 1128, 1159, 

 1173. 



subplana?, 1133, 1134. 



subrecta, 1117, 1127, 1128. 



(?) (textilis), 1056. . V 

 Pterinopecten crenicostatus, 993. 



neptunus, 993. 



proteus, 1203, 1208. 



suborbicularis^ , 994. 

 Pteronites?, 993. 



Pterygotus, 1081, 1087, 1088-90, 1102- 



3, 1104-8. 

 sp., 1104. 



explanation of plate, 1286. 

 banksii, 1088, 1103. 



