Cucaracha f ormation--Continued stratigraphy and litology----------Culebra formation, description---------fossiliferous localities ------- _..--____fossils and age -----_ ---- -_-------_mammal --------------______stratigraphy and lithology----------C 11eata, Bulimina jacksonensis cf--------,curta, Uvigerina-------_--_--._--..--_-_-_-.curvatura, Siphonodosaria aff----------cushmani,Mogypsia..----------------Valmulineria ------------------------cuspidata, N everita----_-_-_-__----___ -_Cyclammina cf. C. deformis ----_---..cf. C paci ca ---------- _--- _,Cyclammina sp -------------------------Cyclostrema pentagona ------------------quadrilineatum..----------------------,C yclostrem iscus_ _--- --_ _----- __-__-_---.. ,Cyclostrem iscus s. s_ --- __---- ------- _,Cyclostremiscus glyptobasis...------.-------of glyptomphalus -----..------------.---tricarinatus -------------------------(Ponocyclus) pentagonus --------.. 48, .ylindrica, Dorothia...-.------------_----D Dacite......--------__---..----_.-___--_dalli, Loxostoma-..--------------- -------Weisbordella_------.-.--..-------_-----Dallitesta --.------------------------.-----danvillense, Nonion..-..-------------------danvillensis, Virgulina cf_ ----- -----_..-..dariena, Clementia..----------.----..------dariensis, Mactra (MAlactrella?) -..---------dartoni, Lepidocyclina (Nephrolepidina) deformis, Cyclammina cf....-----------..---delecta, Phorus---------..---------------..-. Xenophora....--------------------- 48, democraciana, Turritella bifastigata..-..--.Dentalina alazanensis -------------------cf. D. communis_------.--..-.....----cf. D. cooperensis_-- ..-----------.---cf. D. mucronata --_---...-.--------sem ilaevis ----.-----..-- --- ------- --..Dentalina sp -..---------..--------------Dentalina spp..---------..-----------------dentaliniformis, Siphonodosaria cf--------depressa, Solariella n. sp., cf.---------__-derbyi, Anticlimax...-----------------..----diabloensis, Calyptraea"-....-------------Diaerecallus -.-----------------.---------dibollensis, Haplophragmoides cf ---------Virgulina cf -...-----------.-----------. dicampylus, Robulus cf...-...--------------Dike rocks..----.---------.---------------Diorite --------------------------------Diploastrea n. sp. af f. D. crassolamellataDiscorbis araucana..--..---------..---------Discorbis sp -------...---..----------.-----Dispotaea__----------..--------.-----------distans, Calliostoma ---_------------------dodoneum, Crucibulura chipolanum ------dodonum, Pachycrommium....------.----Sinum -----------------------.--.----Dorothia cylindrica.._..---__---_------------' cf. D. nuttalli --..-.-------------------Dorothia s -..--..----.-------------------douvillei, Porites cf_-------------------.-E Echinolds, from Caimito formation_--. from Chagres sandstone -----------from Culebra formation --------- -from Gatun formation..--..--------mPa formation Page ----- 39 -----. 34 6, 121-123 -----_ 36-39 ..--_- 37-38 ---..- 34-36 _-_--- 196 ------ 189 ---- 36, 122 ----- 192 -_- --- 26 -1616 -1616 ----- 73 ----- 73 -_-_-_- 73, 74 _-__-- 73,74 -----_ 74 -----. 74 ----- 74 73-75, pl.-17 -_-- 17 ----- 53,54 ----- 17 ----- 22 93 19 ----- 46 ----.. 23 ..---- 30 ----- 26 ----- 77 77-78, pl. 22 -..--- III ----.. 26 ..---- 16 -.--.. 16 --.--- 16,26 .. -16, 26 --.--- 16, 26 ----.. 16 ----- 18 _-_--- 27 ----- 72 ...--.. 81 ----- 71-7e ----- 17 ----- 19, 27 ----- 18 ----- 54 ----- 53-54 ----- 21 ----- 26 ----.. 16 ----.. 83 ----- 63 ---.-. 82 -- -. 97 ----- 93 ---.-. 17 ----- 17 ----- 17 ----.. 42 .---.. 31 -----. 50 ----- 37 -..--- 47 A') INDEX Page Ellipsoglandulina labiata-----.------------- 17 m ulticostata.._ -- ------_ --- - _---- 17 elongatum, Chrysalogonium.----------------- 16 emaciate, Siphonodosaria verneuili 4_6_-_-_9 18 emendorferi, Hannatoma---.--_..- - 68 Hannatoma? cf----------- 21,22,68, pl.14 emin loides, Polinices------------------------- 90 ECmperador limestone---.__-_-- --____ 34,36,59 Encope annectens-------------------------- 47 megatrema------------------------.------- 47 platytata -.------_-__..-..- - 47 Entosolenia cf. E. laevigata------.. --- 17 cf. E. marginata---.-------------- -- 17 orbignyana --------------------------- 17 Entosolenia sp--_-_--_-_-__---- ---_---- 17 eocanica, Iastigerinell- - ----- 17 Eocene or Oligocene series------ 22-24 Eocene series----------------------- --- 13-22 eoceica, Bathysiphon..---....-.------- iC, 26 EpiscyniaC-CC -____-_C__---C--__----- 76 bolivari_-------- ---.--_-_-_-_ --- 76 Cegalia---------------..-----..---.- 48, 76, pl.8 I naso ----------.---------..-----------..-_---- 76 vicholsoni ..------ .. ...._- _---- __- ---- 76 Eponidesjacksonensis_---. ----------- 17 cf. E. rutteni ------------ .---------. 17 umbonatus--_--_----_-- ---- -- 17 multisepta ---- __----- _-- -_...____ 17,26 epulata, "Alvania'' affL..---- --------- 48,76-77 Rissoa"....--._... --- --___ 76 equestris, Cheilea------ --------------..----- 80 eremum, Calliostoma (Leiotrochus)...-------- 48,63-64 "Eucosmia" lurida ---- ----------- - ----- 66 Eulepidina fauna.------..-------------------- 27-28 Eupatagus clevei-----------..-..----..-- 22 euryhedra, Sinum-------...--..---. 48,93-94, pl. 21 ECr -ytorus-----------..---. ..----- ....----- 101 Euspirocrommium.._ _---_- __-____--- --__ 97 eximia,3arginulina cf C------------------- 17 exoleta, Turritella.- --,----. 101,104 F Fabiania cubensis..------------------------ 20,21,23 fasciata,Mesalia ----- --------- ...---- 68 Favia cf. F. weisbordi ------------------ 21 faosa, Lepidocyclina (1Eulepidina)-------- 27 figulopicta, Neritina (Puperita) __------------ 68 finitima, Natica----- 84 fischeri, Globularia-------_------------------- 94,95 Globularia? cf--l--------------------- 95 Globlaria (Globularia) aff.-..-..-- ------ 27, 31, 37,91-95, pl. 15 flintesis, Pseudophragmina (ProPorocyclina) 20 floridana, Amauropsis"-- ----------- 97 Tectonatica.-.------------------------ 88 Xenophora delecta61 --4 --.1..------------- 78 floridanus, Velates.....-.----------------------- 67 floridensis, Operculinoides ----------.----.---- 20 fluctuate, Cernina-----.- -------------- 94 fluctuates, Turbo--------------------------.. 64 fluctuosus, Turbo-.---------------------- 64 Foraminifera, from Bohio formation.._.--- 23,26-27 from Caimito formation. .. ------_19. 29-30,33 from Culebra formation -------------- 36 from Gatun formation-.--------------- 45 from Gatuncillo formation94 4 9 ----------- 15-21 from Panam formation---.------------- 41-42 fornicate, Crepidula----..---....------------ 79 Crypta -.---------------------------- 79 Fossiliferous localities.-------------- 45,112-130 Fossils, descriptions-------------------.----- 62-112 from Boio formation---- ---------- 23-24,26-28 from Caimito formation0.11 ..1 ..---------- 2-31 from Culebra formation--------------- 3-39 from Gatun formation..11 .1 ------------ 45-47 11991 ucil frato 6891911-1191919191-915-22 69198919 paaa -rai1 139 Page Frondicalaria tenuissima 17 gabbi, Sigaretus (Eunaticina) - 94 Sin-------------------- 38, 9- pl. 21 Turritella ----- 102 gabrielensis, Peudocromiu ------- - 96 -alvesia, Turritella ----_-_-_-_-----_- - 99 Gamboa area, Gatuncillo formation------ 15, 20 gardnerae nuttalliana, Uvigerina_.------- -- 19, 27 garzaensis, Amaurellina----------------- --- 95 gasparensis, Valulineria .---.___-- -__-_ 19 Gastropods------------------------------- -- 62 Gatun formation, description..-_ 42-47 fossiliferous localities ------------------- 125-129 fossils and age --------------------------- 45-47 stratigraphy and litology--------------- 43-45 structural history_-....-.------------------- 57 Gatun Lake area, Bohio formation ---_-_----- 25 Caim ito form ation -- __---_.. -- .. -- _- 28 Gatun Lake district, oil possibilities--------. 60-61 Gatuncillo formation, description --___--_--- 13-14 fossiliferous localities1---1--------..----1 112-114 fossils and age.---------------..---------- 15-22 stratigraphyand lithology ---____-_-14-15 structural history ------------------------- 67 gatunense, Cardium (Fragum)----------- 23 Crucibulu (Dispotaea)------------------- 83 Sinum ----------------..------------- 48,93 4atunensis, Anticlimax ( 9Anticlimax)----- 48, 72, pl.18 Capulus? ------------------------.-------- 83 Crepidula --------------------------.-_---- 79 Turritella_-- --------.. 47,99,100,108-109,110 gatunensis?, Tarritella------------------------ 33,50 gatunensis, Tarritella cf--------------------- 108,109 Turritella gatunensis----------- 48,108-109, pl. 23 blountensis, Turritella--------------..--- 109 caronensis, Turritella... ----------------.- 109 gatunensis, Turritella---------- 48,108-109, pl. 23 lave7lana, Turritella------..------------ 108,110 rhytodes, Turritella --------..--- 48,109--110, pl. 23 taratarana, Tvrritella ....----------------- 110 "gatunensis" tarataranoides," Turritella'---- 110 gatunensis willistoni, Turritella9-4189 --..------ 110 gatuni, Clypeaster--------------------------- 42,47 Gaudryina (Pseudogaudryina) alazanensis..---- 26 cf. G. jacksonensis....-----..-- ..----. 17 Geographic names, orthography.--.....--- 4 georgiana, Asterocyclina-- ------ 20,61 gibba, Globulina cf------------------------..- 17 gigas, Lepidocyclina------------------------- 27 girardana, Gyroidinoides---------------------- 17 Gyroidinoides cf 2-------------------------- 26 giraudi, Lepidocyclina --------------------- 27 Glandulina sp ------- ----------------- 17,26 glauca, Natica --------------------- 92 Neverita.-- -------------------- 92,93 Polinices (Neverita)---.2---------------.. 92 Globigerina ciperoensis...----------......---- 17,26 ouachitaensis.------ ---------------- -- 17,26 Globigerina sp--.-------------------------- 17,26 Glob igenodes mexicanus..-- ..-.------- --- 17 Globigernoides sp----- -------------------- 17 Globobulimina hanna - ---- 17 cf. G. hannai ----- .----.---- --------- 17 Globobulimina sp ..------------------- -- 17 Globorotalia centralis...---------------- --- ,19 globosa, Triloculina cf ------ ----..--- --- 19 Globotruncana--- ------ --------- 13 Globularia -2----- --------- ---94,95 Globularia s. s_ ----- -- ----------------- 94,95 Globularia anguillana---------- --------- --- 95 Globulaa of. G. fscheri ----------- 95 Globularia parisiensis--------------- --- 95 si 4t - - 94 .f-"l I