UNIVERSITY OF CALIFORNIA PUBLICATIONS 



BULLETIN OF THE DEPARTMENT OF 



GEOLOGY 



Vol. 4, No. 5, pp. 101-123, PlS. 12-13. ANDREW C. LAWSON, Editor 



CONTRIBUTION TO THE PALAEONTOLOGY 

 OF THE MARTINEZ GROUP. 



BY 



Charles E. Weaver. 



contents. 



PAGE 



Introduction 102 



Historical Eeview 102 



Geographic Distribution 104 



Stratigraphic Kelations 105 



Correlation Ill 



Summary 113 



Description of Species 114 



Lima multiradiata Gabb 114 



Modiola merriami, n. sp 114 



Area biloba, n. sp 115 



Tellina martinezensis, n. sp 115 



Solen stantoni, n. sp 116 



Pkoladomya nasuta Gabb 116 



Thracia karquinesensis, n. sp 117 



Architectoniea tubercnlata, n. sp 117 



Discohelix calif ornicus, n. sp 118 



Turritella conica, n. sp US 



Xenophora zitteli, n. sp> 118 



Ficopsis angulatus, n. sp 119 



TJrosyea robusta, n. sp 119 



Tritouium impressum, n. sp 120 



Tritonium eocenicum, n. sp 120 



Tritouium pulehrum, n. sp 120 



Fusus aequilateralis, n. sp 121 



Perissolax tricarnatus, n. sp 121 



Bullinula subglobosa, u. sp 122 



Actaeon lawsoni, n. sp 122 



Cancer ( ?) sp 123 



