ARNOLD — THE PALEONTOLOGY AND STKATIGKAPHY OF SAN PEDRO. 



15 



List op Species Found in tiik Pliocene of Deadman Island. 



(P iudieiites species living at San Pedro ; N indicates species found living only nortli of San Pedro; 

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



Callkla suhdiaphana, 1 

 Chama peUucida, V 

 Corbula Intcola, P 

 CiimiiKiia cali/ornlra, 

 Ki'llia laperousU, V 

 Li'tla tapkria, V 

 Litciiia acutilineala, V 

 Liicina cali/ornica, P 

 Lyonsta cali/ornica, P 

 JUacoma inquinata, P 



Acmn a inst'soa, P 

 Amphissa corriir/ata, V 

 Beta /idicula, N 

 Billium asperiim, P 

 Calliostoma canaliculaium, \ 

 Calliosloma tricolor, P 

 Cerilhidea californica, P 

 Chlorostoma brunneum, P 

 Chloronloma montereyi, P 

 Chrysodomus sp. indet., N 

 Chrysodomus rectirostris, N 

 Chrysodomus tahulalus, P. 

 Clalhurella conradiana, E 

 Colintibelta ijausapata, P 

 Columhella var. carinala, P 

 Oonus californicus, P 

 Cryplochilon slelleri, N 

 Drillia merriatni, E 

 Drillia lorosa, P 



PELECYPODA. 

 Mytilimeria nutlalli, P 

 Nucula caslrcnsis, P 

 Panomya ampla, N 

 Panopca r/enerosa, P 



Peclc.n caurinus, 

 Pecten hastatus, 

 PicWn hcriceus, 

 Pecten jordani, 

 Pecten stearnsii, 



N 

 P 

 N 

 E 

 E 



GASTROPODA. 



Fnsus barbarensis, E 

 Hipponyx antinualus, P 

 LiUorina planaxis, P 

 Mangilia sculpturata, P 

 Naasa californiaua, P 

 Nassafossata, P 

 Nassa mendica, P 

 Nassa var. cooperi, P 

 Nassa perpinguis, P 

 Natica clausa, N 

 Neverita recluziana, P 

 Ocinebra inter/ossa, P 

 Olivella hiplicala, P 

 Olii'cUa inlorta, P 

 Olivella pedroana, P 

 Pleurotoma hartsrhi, E 

 Plcurotoma dalli, E 

 Pleurotoma perversa, P 

 Pleurotoma rtnaudi, E 



Pholadidea penita, P 

 Protocardia centifilosa, P 

 So/e»t sicarius, P 

 Thraeia trapezoides, E 

 Thyasira bisecta, N 

 Thyasira gouldii, P 

 Venericardia barbarensis, P 

 Venerieardia vcnlricosa, N 

 Venus simillima, P 



Pleurotoma smithi, E 

 Priene oregonensis, P 



N 



Puncturella cncullata, 

 Punrturella yaleata, 

 Scala indianorum, P 

 Solariella cidaris, P 

 Solariclla prramahili.s, 

 Taranus strongi, E 

 Terebra simplex, P 

 Thalotia caffea, P 

 Tornatina eximia, P 

 Trophon gracilis, P 

 Trophon scalariformis, 

 Trophon stuarti, N 

 Trophon var. precursor, 

 Trophon tenuisrulpla, E 

 Turritella cooperi, P 

 Turritella jewetii, E 



N 



N 



Bryozoan remains, ? 



BRACHIOPODA. 

 Laqueus jefn ysi, N 



Tercbratalia smithi, E 



Resume. 



Total number of species 87 



Pelecypoda, species 28 



Gastropoda, species 56 



Brachiopoda, species 2 



Bryozoa, species ; 



Species now living at San Pedro S.'i 



Percentage of the whole faiina 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 



