98 



University of California Publications in Geology 



[Vol. 11 



A B C D 



Perse corrugatum, n. sp 



Pseudoperissolax? sp 



Pseudoperissolax merriami, n. sp 



Potomides (Oerithidea) branneri, n. sp 



Scaphander sp.? 



Searlesia dalli, n. sp 



Sinum seopulosum (Conrad) x x x x 



Solarium lorenzoensis (Arnold) 



Strepsiduraf sp 



Styliola sp. ? 



Thais packi, n. sp 



Turbonilla sp.? 



Turris alticollarus, n. sp 



Tun is nomlandij n. sp 



Turris perissolaxoides Arnold 



Turris (Drillia) thurstonensis Weaver x 



Turritella diversilineata Merriam x 



Turritella porterensis Weaver x 



Turritella porterensis sobrantensis, n. var x x 



Vermieularia? sp 



SCAPHAPODA 



Dentalium conradi Dall X 



Dentalium petrieola Dall x x x x 



Dentalium radiolineata, n. sp x x x 



Dentalium radiolineata sobrantensis, n. var. 

 Vermes 



Serpula rectiforma, n. sp 



ECHINODERMATA 



Sehizaster calif ornica (Weaver) 



Anthozoa 



Dendrophyllum californiana Nomland 



Sidastrea clarki Nomland 



Cephalapoda 



Aturia sp 



Crustacea 



Balanus sp. A 



Balanus sp. B 



Statistical Summary of Faunal List 



Number of species 137 



Number of determinable species 112 



Number of indeterminate species 25 



Number of Recent species 2 



Percentage of determinable species which are Recent 1.78 



Number of determinable species that extend into Lower Miocene or higher 10 

 Percentage of determinable species that extend into Lower Miocene or 



higher 8.9 



Number of determinable species that extend into Eocene 



Number of determinate species common to the San Lorenzo of the Santa 



Cruz Mountains 13 



