GASTROPODS: TROCHIDAE TO TURRITELLIDAE


No. USGS used in Cenozoic this No. report


No. USGS used in Cenozoic this No. report


17161 16889 1762


Field No.





116


113 108


113


 Description of locality



 GATUNCILLO FORMATION-Continued

 Madden basin, Panamd. Trail south
 of Rio Puente, 800 meters southeast of Natural Bridge. Limestone. T.
 F. Thompson and W. P. Woodring,
 1949. Corals.
 Madden basin, Panami. Lumber road
 south of Rio Puente, 1.5 kilometers southeast of Natural Bridge. Marly limestone. T. F. Thompson, 1948.
 Also a collection by T. F. Thompson
 and W. P. Woodring, 1949.
 Madden basin, Panamd. Road to
 Madden Airfield, 650 meters northeast of Casa Larga. Marly limestone. T. F. Thompson, 1948. Also a collection by T. F. Thompson and W. P. Woodring, 1949. Larger
 Foraominifera (Cole, 1952 [1953]). Madden basin, Panami. Madden Airfield, about 300 meters north of north end of paved runway, 1.7 kilometers east of Casa Larga. Limestone. J.
 R. Schultz, T. F. Thompson, and W.
 P. Woodring, 1947. Also larger Foraminifera (Cole, 1952 [1953j), corals,
 and echinoids (Cooke, 1948).
 Madden basin, Panamd. Lumber road
 south of Rio Puente, 4 kilometers east of Casa Larga. Marly limestone. T. F. Thompson, 1948. Also a collection by T. F. Thompson and W. P. Woodring, 1949. Also corals. Madden basin, Panamd. Road from
 Casa Larga to Laguna, 1 kilometer south-southeast of Rio Chilibrillo bridge. Marly limestone. T. F. Thompson, 1948. Also a collection by T. F. Thompson and W. P. Woodring, 1949. Larger Foraminifera.
Madden basin, Panamd. 325 meters east of road from Casa Larga to Laguna, 1.1 kilometers southeast of Rio Chilibrillo bridge. Limestone. T. F. Thoipson, 1948. Also a collection by T. F. Thompson and W. P. Woodring, 1949. Larger Foraminifera.
Madden basin, Panamd. Road from
 Casa Larga to Laguna, 1 kilometer west of Laguna. Limestone. T. F. Thompson and W. P. Woodring, 1949. Larger Foraminifera.


16 17 18 19







20 21 22 23


17434


Field No. 128






147 146 145 19






 20 124 125


 Description of locality



 GATUNCILLO FORMATION-Continued

 Madden basin, Panamd. Road from
 Casa Larga to Laguna, south side of Rio Lim6n immediately south of Laguna. Limestone. T. F. Thompson and W. P. Woodring, 1949. Also
 corals.
 Quebrancha syncline, Panamd. Stream
 about 50 meters west of trail on east side of Rio Gatuncillo, 4.5 kilometers northeast of Transisthmian Highway bridge across Rio Gatuncillo. Mudstone and siltstone. W. P. Woodring, 1949. Smaller Foraminifera. Quebrancha syneline, Panamd. Trail
 on east side of Rio Gatuncillo, 3.3 kilometers northeast of Transisthmian Highway bridge across Rio Gatuncillo. Limestone. W. P.
 Woodring, 1949. Larger Foraminifera.
 Quebrancha syneline, Panamd. Trail
 on east side of Rio Gatuncillo, 2 kilometers northeast of Transisthmiian Highway bridge across Rio Gatuncillo. Soft limestone. W. P.
 Woodring, 1949. Larger Foraminifera (Cole, 1952 [1953]).
 Quebrancha syncline, Panamd. North
 side of Transisthmian Highway, 50 meters east of bridge across Rio Gatuncillo. Limestone. J. R.
 Schultz and W. P. Woodring, 1947.
 Larger Foraminifera.
 Quebrancha syneline, Panamsd. East bank of Rio Quebranchla about 100 meters northeast of Transisthmian Highway bridge. Mudstone. J. R.
 Schultz and W. P. Woodring, 1947.
 Smaller Foraminifera.
 Quebrancha syncline, Panamd. Road to Nuevo San Juan, 0.5 kilometer southwest of junction with Transisthmian Highway. Fairly soft limestone. T. F. Thompson and IV. P. Woodring, 1949. Larger Foraminifera (Cole, 1952 [1953]). Quebrancha syncline, Panamf. Road to Nuevo San Juan, 2 kilometers southwest of junction with Transotlisumian Highway. Fairly soft limestone. T. F. Thompson and W. P. Woodring, 1949. Larger Foraminifera (Cole, 1952 [1953]).


107 106 105 129