246 University of California Publications in Geology [ VoL - 7 



Geological Eange of Western American Sharks — (Continued) 



Cret- Pleisto- 

 Species Triassic aceous Eocene Miocene Pliocene cene Recent 



Heptranchias ander- 



soni Jordan, .. .. .. x 



Hybodus shastensis 



Wemple, x 

 Isurus desori Agassiz, x 

 Isurus hastalis Agassiz 



(I. smithii Jordan) , x x 



Lamna appendieulata 



Agassiz, ..xx.. 

 Bhinoptera smithii 



Jordan and Beal, x x 



Squatina lerichei 



Jordan and Beal, .. .. .. x 



The following is a list of the fossil sharks of California as 

 now recognized : 



Family HYBODONTIDAE 



Genus Hybodus Agassiz 



1. Hybodus shastensis Wemple. 



Upper Triassic at Bear Cove, Shasta County. 



Genus Acrodus Agassiz 



2. Acrodus wempliae Jordan. 



Upper Triassic of Bear Cove and North Fork, Shasta 

 County. 



Family HEXANCHIDAE 

 Genus Heptranchias Rafinesque 



3. Heptranchias andersoni Jordan. 



Miocene at Barker's Ranch, Kern County. 

 This M. Leriche identifies with Notidanus primigenius Agassiz 

 of Europe. This may be correct, but the living species of 

 Heptranchias of California, H. macidatus Ayres, is distinct from 

 the European H. cinereus. (Notidanus is a later synonym of 

 Hexanchus.) 



