Geology and Paleontology of Canal Zone and Adjoining ... - USGS
Geology and Paleontology of Canal Zone and Adjoining ... - USGS
Geology and Paleontology of Canal Zone and Adjoining ... - USGS
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Abstract.._________________________________________<br />
Introduction-______________________________________<br />
Fieldwork <strong>and</strong> acknowledgments._____________________<br />
Changes in formation <strong>and</strong> age assignments.____________<br />
Additions to annotated bibliography,_________________<br />
Additions to localities at which fossils were collected_____<br />
New generic <strong>and</strong> subgeneric names.___________________<br />
Gastropod faunal summaries <strong>and</strong> age <strong>of</strong> formations. ____<br />
Eocene series.._________________________________<br />
Gatuncillo formation._______________________<br />
Eocene or Oligocene series.______________________<br />
Marine member <strong>of</strong> Bohio(?) formation .-_____<br />
Oligocene series__----_-_______________-____-____<br />
Bohio formation.___________________________<br />
Caimito formation._________________________<br />
Caraba formation.__________________________<br />
Panama formation-____-___-________-_-----_<br />
Miocene series________________________________<br />
Culebra formation._________________________<br />
Cucaracha formation..______________________<br />
La Boca formation, including Emperador lime<br />
stone member.___________________________<br />
Alhajuela formation.._______________________<br />
Gatun formation._____________-_______----_<br />
Chagres s<strong>and</strong>stone, including Toro limestone<br />
member_ ________________________________<br />
Holocene series.___________________-____-------_<br />
Informally designated Atlantic <strong>and</strong> Pacific muck_<br />
CONTENTS<br />
Page<br />
299<br />
299<br />
300<br />
300<br />
301<br />
301<br />
303<br />
303<br />
303<br />
303<br />
304<br />
304<br />
305<br />
305<br />
306<br />
307<br />
308<br />
309<br />
309<br />
311<br />
311<br />
317<br />
317<br />
322<br />
325<br />
325<br />
ILLUSTRATIONS<br />
[Plates follow index]<br />
Page<br />
Description <strong>of</strong> Tertiary mollusks continued from chapter<br />
C__________________________________________ 326<br />
Gastropods continued from chapter C__________ 326<br />
Family Eulimidae___________________________ 326<br />
Family Marginellidae___-_________-__-_-____ 330<br />
Family Cancellariidae.._____________________ 334<br />
Family Conidae____________________________ 345<br />
Family Turridae___--___-___________________ 360<br />
Family Terebridae__________________________ 403<br />
Family Pyramidellidae____--_-__-____--_____ 414<br />
Family Acteonidae______-__-_-____-_________ 415<br />
Family Ringiculidae________________________ 416<br />
Family Scaph<strong>and</strong>ridae______-____---_______ 417<br />
Family Philinidae_________________________ 420<br />
Family Bullidae---____-_--__---_---_-______ 421<br />
Family Atyidae___________________________ 422<br />
Family Retusidae___---__--------_------___- 423<br />
Family Spiratellidae___-__-__-__-___________- 426<br />
Family Cavolinidae_________________________ 427<br />
Family Ellobiidae_________________________ 429<br />
Family Helminthoglyptidae._________________<br />
Additions <strong>and</strong> corrections to families covered in<br />
429<br />
preceding chapters._______________________ 430<br />
References cited____________________________________ 435<br />
Index _________--__-_-_-------__------___------__-- 441<br />
PLATE 48. Middle Eocene mollusk from Gatuncillo formation, late Eocene or early Oligocene mollusks from marine member<br />
<strong>of</strong> Bohio (?) formation, late Oligocene mollusks from Bohio <strong>and</strong> Caimito formations, <strong>and</strong> early Miocene mollusks<br />
from La Boca formation.<br />
49. Late Oligocene mollusks from Caimito formation, early Miocene mollusk from La Boca formation, <strong>and</strong> middle<br />
Miocene mollusks from Gatun formation.<br />
50. Early Miocene mollusks from La Boca formation <strong>and</strong> Chipola formation <strong>of</strong> Florida.<br />
51. Early Miocene mollusk from Emperador limestone member <strong>of</strong> La Boca formation <strong>and</strong> middle Miocene mollusks<br />
from Gatun formation.<br />
52-61. Middle Miocene mollusks from Gatun formation.<br />
62, 63. Middle Miocene mollusks from Gatun formation <strong>and</strong> late Miocene mollusks from Chagres s<strong>and</strong>stone.<br />
64, 65. Protoconchs <strong>of</strong> middle Miocene turrids from Gatun formation.<br />
66. Protoconchs <strong>of</strong> middle Miocene turrids <strong>and</strong> terebrids, <strong>and</strong> pteropod from Gatun formation.<br />
in
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