ARNOLD — THE PALEONTOLOGY AND STKATIGKAPHY OF SAN PEDKO. 



45 



Scala hindsii Carpenter 



Scala indianorum Carpenter 



Scala iincta Carpenter 



Sella assimilala C. B. Adams 



Serpulorbis squamigerus Carpenter 



Sigaretus debilis GocLD 



Siphonalla kellettii Forbes 



Solariella cidaris A. Adams 



Solariella peramabilis Carpenter 



Spiroglyphtis lituella MoRCH 



Styliferina ienuisculpia Carpenter 



Taranlf strong! sp. nov 



Terebra (AcusJ simplex Carpenter 



Thalotia caffea Gabb 



Tornaiina cerealis Gould 



Toriiatlna culcitella Gould 



Tornaiina eximia Baird 



Tornaiina harpa Dall 



Triforis adversa MoNTAonE 



Trivia californica Grav 



Trivia solandri Gray 



Tritonium gibbosus Broderip 



Trophon (Boreotrophon) cerriiensis, sp. nov 



Trophon (Boreotrophon) gracilis Perry 



Trophon (Boreotrophon) muliicostatus Eschscholtz. 



Trophon (Boreotrophon) pedroanus, sp. uov 



Trophon (Boreotrophon) scalarl/ormis Gould 



Trophon stuarti Smith 



Trophon orpheus var. prcecursor, var. uov 



Trophon (Boreotrophon) ienuisculpia Carpenter. .. 

 Trophon (Boreotrophon) iriangulatus Carpenter.. 



Turbonilla adleri (Dall & Bartsch), sp. nov 



Turbonilla arnoldi (Dall & Bartsch), sp. nov 



Turbonilla aurantia Carpenter 



Turbonilla crebrijllata Carpenter 



X 

 X 

 X 

 X 

 X 

 X 

 X 

 X 



c 



X 



1 



E 

 X 

 X 

 X 

 X 

 X 

 X 

 N 

 X 

 X 



s 



E 

 X 



N 

 E 

 N 

 N 

 E 

 E 

 X 

 E 

 E 

 X 

 X 



Pleistocene. 



Pliocene. 



Upper San Pedro. 





K 

 K 

 E 



M 



E 



C 

 C 

 E 



M 

 E 

 E 



M 

 E 



E 



E 

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E 

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E 



M 



E 

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•5 « 



Ui 



ca o 

 u V 



M 

 M 

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R 



M 



E 



E 

 E 



Lower 

 San Pedro. 



E 

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E 

 E 



M 

 E 

 E 



M 



E 

 E 



E 

 E 

 E 

 C 

 C 

 E 

 M 



E 

 R 

 E 

 E 

 E 



a. 3 



M 

 E 

 E 



R 



M 



M 

 M 



R 

 R 



•O CO 



E 



R 

 E 



K 

 R 



M 



E 



R 



R 

 C 

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 E 



E 



