GEOLOGY AND PALEONTOLOGY OF CANAL ZONE


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"Margarites" sp-Calliostoma (Leiotrochus) eremum Woodring, n sp -_____ -__ -_ - - -- ______Turbo (Marmarostoma) aff. T. castaneus Gmelin_-..
Tricolia? syntoma Woodring, n. sp Neritina (I7itta?) cf. N. virginea (Linn6) Teinostoma (Idioraphe) spermatia Woodring,
 n. sp.---------------_-....-...--angulatum trochalum Woodring, n. subsp.
 (Aepystoma) andrium Woodring, n. sp._(Pseudorotella) pycnum (Woodring)------stemonium Woodring, n. sp------------(Diaerecallus) sychnum Woodring. n. sp__. Anticlimax (Anticlimax) gatunensis Pilsbry
 and Olsson -- __-_ -_ ---- 
 (Subclimax) teleospira teleospira Pilsbry andO lsson -_ - _____________-hystata Woodring, n. subsp..
 Cyclostremiscus (Ponocyclus) pentagonus
 (G abb) -------. -- --_-- 
 Solariorbis (Solariorbis) strongylus Woodring,
 n.sp------------------------(Hapalorbis) hyptius hyptius Woodring, n.
 sp. and n. subsp..-...........---anebus Woodring, n. subsp
 Episcynia megalia Woodring, n. sp -.. "Alvania" aff. "A." epulata (Pilsbry and
 Johnson)
Rissoina (Phosinella) oncera Woodring, n.
 sp --------------------------Xenophora delecta (Guppy) --Crepidula cf. C. maculosa Conrad -------p lan a S ay --.. ------------------------Calyptraea centralis (Conrad)--Trochita trochiformis (Born)---Crucibulum (Crucibulum) chipolanum Dall
 (Dispotaea) springvaleense Rutsch Cheilea princetonia Brown and Pilsbry Natica (Natica?) bolus Brown and Pilsbry(Naticarius) canrena (Linn6)
 stenopa Woodring, n. sp-----------Stigmaulax guppiana (Toula) -----------Tectonatica agna Woodring. n. sp -------Polinices canalizonalis (Brown and Pilsbry)
 brunneus subclausus (Sowerby) -stanislas-meunieri Maury ----------Neverita (Glossaulax) reclusiana xena Woodring n. subsp-----------------(Hypterita) helicoides (Gray) ----------Sinum gatunense (Toula) -------------euryhedra Woodring, n. sp---------gabbi (Brown and Pilsbry)------------Turritella (Torcula) altilira Conrad, s. 1 .-..altilira altilira Conrad_-. .------------ 
 altilira praecellens Pilsbry and Brown abrupta Spieker------------------matarucana Hodson ...-------gatunensis gatunensis Conrad.----- 
 rhytodes Woodring, n. subsp.-...-mimetes Brown and Pilsbry..-......tifastigata Nelson-----...---...-.......-


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 Mollusks from Gatun formation
 [For explanation of symbols see p. 46]

 Localities

 Middle part Lower part Eastern area


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