ARNOLD — THE PALEONTOLOGY AND STRATIGRAPHY OF SAN PEDRO. 



15 



List of Species Found in the Pliocene of Deadman Island. 



(P indicates species living at San Pedro ; N indicates species found living only noi-th of San Pedro; 

 E indicates extinct species or those not known as living.) 



Callhia siihdiaphana, I* 

 Ghama pclliicida, P 

 Corhula tiUcola^ P 

 CumiiKi'm californica, I 

 Kellia lapcrousii, P 

 Leda taphria, P 

 Lucina actitilineala, V 

 Lucina californicu, P 

 Ljjonsia caUfornka, P 

 Macoma inquinala, P 



Acmaa insessa, P 

 Amphissa corriu/ata, P 

 Bc'la fidicula, N 

 Bittium anperum, P 

 Calliostoma ranaliculaium, P 

 Calliosloma tricolor, P 

 Cerithidea californica, P 

 Chlorostoma hruniieiim, P 

 Chlorosloma moniereyi, P 

 Chrysodomus sp. indet., N 

 Chrysodomus reclirostris, N 

 Chrysodomus tabulalus, P. 

 Clathurelta conracliana, E 

 Ooliimbella gausapata, P 

 Coliimbella var. carincUa, P 

 Conus cali/ornicus, P 

 Cryplochilon stelleri, N 

 DriUia merriami, E 

 Drillia torosa, P 



PELECYPODA. 

 Mylilimeria nuitalli, P 

 Nuciila caslrcnsis, P 

 Panomya ampla, N 

 Panopea generosa, P 

 Pecten caurinus, N 

 Pecten hastatus, P 

 Pcelen hericeus, N 

 Pecten jordani, E 

 Pecten slcarnsii, E 



GASTROPODA. 



Fusus barharensis, E 

 Hipponyx antiqualus, P 

 Littorina planaxis, P 

 Mangilia sculplurata, P 

 Na^sa californiuna, P 

 Nassa fossa la, P 

 Nassa mendica, P 

 Nassa var. cooperi, P 

 Nasscc perpiiiguis, P 

 Natica clausa, N 

 Neverita recluziana, P 

 Ocinebra interfossa, P 

 Olivella biplicala, P 

 Olioella intorta, P 

 Olivella pedroana, P 

 Pleurotoma bartschi, E 

 Pleurotoma dalli, E 

 Pleurotoma perversa, P 

 Pleurotoma nnaudi, E 



P/iolndidea penita, P 

 Protorardia c.entifilosa, P 

 Solett sicarius, P 

 Thracia trapczoides, E 

 Thyasira bisecta, N 

 Thyasira gouldii, P 

 Venericardia barbarensis, P 

 Venericardia venlricosa, N 

 FejiMS similtima, P 



Pleurotoma smithi, E 

 Prime oregonensis, P 

 Puncturella cucullata, N 

 Puncturtlla galeata, N 

 Scala indianorum, P 

 Solariella cidaris, P 

 Solariella peramabilis, P 

 Taranus strong!, E 

 Terehra simplex, P 

 Thalotia caffea, P 

 Tornatina eximia, P 

 Trophon gracilis, P 

 Tropihon scalariformis, N 

 Trophon stuarti, N 

 Trophon var. precursor, ] 

 Trophon tenuisculpta, E 

 Turritclla cooperi, P 

 Turritella jewetti, E 



Bryozoan remains, 



BRACHIOPODA. 



Laqucus jeffreysi, N 



Tercbratalia smithi. 



Resume. 



Total number of species 87 



Pelecypoda, species 28 



Gastropoda, species 56 



Brachiopoda, species 2 



Biyozoa, species ? 



Species now living at San Pedro 55 



Percentage of the whole fauna 63.1 



Species living only north of San Pedro 16 



Percentage of the whole fauna 18.5 



Species living only south of San Pedro 



Percentage of the whole fauna 



Species extinct or not known as living 15 



Percentage of the whole fauna 17.3 



Species of questionable habitat 1 



Percentage of the whole fauna 1.2 



