20 



University of California Publications in Geology 



[Vol. 8 



ZONE 1 



A very large fauna was obtained from the basal beds. These 

 strata, consisting of four to five feet of irregularly bedded limestone, 

 conglomerate, and hard calcareous sandstone, and about two feet of 

 thin-bedded sandstone, lie unconformably upon the Chico limestone 

 and sandstone. Numerous Zirphaea (?) borings mark this ancient 

 shoreline of the Tejon Sea. A partial list of species from zone 1 is 

 given below : 



Fungia ( ?) , n.sp. 



Turbinolia, n.sp. (a) (long). 



Turbinolia, n.sp. (b) (short). 



Coral (reef form),sp. 



Cassidulus ealifornicus Anderson. 



Scutella, n.sp. 



Aeila, sp. 



Astarte mathewsonii Gabb. 

 Avicula pellucida Gabb. 

 Cardium eooperi Gabb. 

 Gardium, sp. 

 Corbula parilis Gabb. 

 Dosinia elevata Gabb. 

 Dosinia gyrata Gabb. 

 Glycimeris cf. sagittata (Gabb). 

 Glycimeris cor. (Gabb). 

 Leda gabbi Conrad. 

 Lueina, sp. 

 Mactra, sp. 

 Spisula, n.sp. 

 Meretrix hornii Gabb. 

 Meretrix ovalis Gabb. 

 Meretrix uvasana Gabb. 

 Modiolus ornatus (Gabb). 

 Ostrea aviculaformis Anderson. 

 Ostrea, sp. 



Placunanomia inornata Gabb. 

 Pteria (?), sp. 

 Solen parallelus Gabb. 

 Tapes eonradiana Gabb. 

 Tapes, sp. 



Tapes ( ?) quadrata Gabb. 

 Tellina cf. aequalis (?) Gabb. 

 Tellina hornii Gabb. 

 Tellina longa Gabb. 



Tellina remondii Gabb. 

 Tellina, n.sp. 

 Venus ( ?) , sp. (a). 

 Venus (?), sp. (6). 



Venericardia planicosta, var. hornii 



Gabb. 

 Yoldia ( ?), n.sp. 

 Zirphaea ( ?), sp. 

 Dentalium eooperi Gabb. 

 Dentalium stramineum Gabb. 

 Amauropsis alveata Gabb. 

 Bulla hornii Gabb. 

 Cassidaria tuberculata (Gabb). 

 Cylichna costata Gabb. 

 Ficopsis remondii Gabb. 

 Fusus californica Gabb. 

 Fusus diaboli Gabb. 

 Fusus martinez Gabb. 

 Fusus, sp. 



Galerus excentricus Gabb. 

 Littorina compacta Gabb. 

 Lunatia hornii Gabb. 

 Neptunea (?) supraplicata Gabb. 

 Neptunea ( ?), sp. 

 Neverita secta Gabb. 

 Olivella mathewsonii Gabb. 

 Perissolax blakei Gabb. 

 Pseudoliva volutaeformis Gabb. 

 Eimella canalifera Gabb. 

 Sureulites, sp. 



Turris perkinsiana (Cooper). 

 Turris, sp. (a). 

 Turris, sp. (&). 



Turritella merriami Diekerson. 



Fungia (?) sp., Turbinolia, n.sp. a, and Yoldia (?) n.sp. appear to 

 be restricted to this zone. Dosinia elevata Gabb and Dosinia gyrata 

 Gabb, although not characteristic, are very common at this horizon. 



