GASTROPODS: TROCHIDAE TO TURRITELLIDAE


No. USGS used in Cenozoic Field this No. No. report


No. USGS used in Cenozoic Field this No. No. report






 541 18842 212


214 202 202a 201


 Description of locality



MIDDLE MEMBER OF CAIMITO FORMA-TION, GATUN LAKE AREA, CANAL
 ZONE-continued

Barro Colorado Island, northeastern
 part of island, second stream east of laboratory clearing, 150 meters above mouth. Soft sandstone. W.
 P. Woodring, 1954. Larger Foraminifera. Not plotted.
Barro Colorado Island, northwestern
 part of island, stream heading north of Zetek Trail at Zetek 9, about 550 meters in direct line north-northwest of Zetek 9. Calcareous tuffaceous sandstone. W. P. Woodring, 1954.
 Larger Foraminifera. Not plotted. Barro Colorado Island, same stream as
 that for locality 54d, but about 200 meters downstream. Soft limestone.
 W. P. Woodring, 1954. Larger Foraminifera. Not plotted.
Barro Colorado Island, northwestern
 part of island, stream crossing Standley Trail at 60 meters northwest of Standley 11, about 30 meters downstream from trail. Soft limestone.
 W. P. Woodring, 1954. Larger
 Foraminifera.
Barro Colorado Island, western part of
 island, first stream north of Zetek House, about 300 meters above mouth. Soft medium-grained sandstone. W. P. Woodring, 1954.
Barro Colorado Island, same stream as
 that for locality 54g, but at mouth.
 Soft sandstone containing calcareous lumps. W. P, Woodring, 1954.
 Not plotted.
Barro Colorado Island, western part of
 island, mouth of small stream 450 meters in direct line south-southeast of Zetek House. Soft sandstone.
 W. P. Woodring, 1954. Larger Foraminifera.
Barro Colorado Island, southwestern
 part of island, stream crossing Conrad Trail at Conrad 2, about 365 meters upstream from mouth. Soft sandstone. W. P. Woodring, 1954. Barro Colorado Island, same stream as
 that for locality 54j, but about 60 meters upstream above mouth. Soft sandstone. W. P. Woodring, 1954.
 Not plotted.


55



55a 55b 56










56a


18846 216 18847 216a


6025


55


 Description of locality



MIDDLE MEMBER OF CAIMITO FORMATION, GATUN LAKE AREA, CANAL
 ZONE-continued

Barro Colorado Island, southwestern
 part of island, second stream northwest of end of Armour Trail, 60 meters above mouth. Gritty sandstone containing larger Foraminifera and mollusks, and somewhat calcareous sandstone containing mollusks. W. P.
 Woodring, 1954.
Barro Colorado Island, southwestern
 part of island, small stream 400 meters northeast of end of Armour Trail, 15 meters above mouth.
 ledium-grained sandstone containing somewhat calcareous lumps.
 W. P. Woodring, 1954.
Barro Colorado Island, same stream as
 that for locality 54m, but 100 meters above mouth. Fine-grained silty sandstone containing small Foraminifera and mollusks. W. P. Woodring, 1954. Not plotted.
Pefa Blanca. Type locality of Lepidocyclina canellei. A submerged locality, originally on west bank of RIo
 Chagres. Location approximate. Pato Horqueto Island, south coast
 about 200 meters west of southeast end of island. Tuffaccous siltstone containing small Foraminifera and
 mollusks. W. P. Woodring, 1954. Pato Horqueto Island, south coast
 about 75 meters west of southeast end of island. Conglomerate. W.
 P. Woodring, 1954. Not plotted. Foraminiferal marl and coarse sandstone about 200 yards (200 meters) south of southern end of switch at Bohio Ridge station, relocated Panama Railroad. D. F. MacDonald and T. W. Vaughan, 1911 (MacDonald, 1919, p. 540, pl. 154).
 [Type locality of Lepidocyclina pancanalis, Operculinoides panamensis,
 and M-liogypsina panamensis.]
Panama Railroad, east side of second
 cut southeast of Bohio Peninsula.
 Soft calcareous tuffaceous sandstone.
 S. 1. Jones and W. P. Woodring, 1947. Larger Foraminifera (Cole, 1952 [1953]). Same as locality 56.
 Not plotted.


54m 1 18843 1 213


117


54n 1 18844 1 213a


210


18840


54d


54f 54g




54h 54i 54j 54k


18841 210a


211 204 204a


18833




18834