.J SI : ^ ' ' 



UNIVERSITY OF CALIFORNIA PUBLICATIONS 



BULLETIN OF THE DEPARTMENT OF 



GEOLOGY 



Vol. 12, No. 2, pp. 23-236, plates 3-42, 5 text figures September 28, 1920 



CRETACEOUS AND CENOZOIC ECHINOIDEA OP 

 THE PACIFIC COAST OF NORTH AMERICA 



BY 



WILLIAM S. W. KEW 



CONTENTS PAGE 



Introduction 26 



Geologic time scale for the Pacific Coast 26 



Geologic range 28 



Geographic distribution 30 



Faunal relations with other provinces 32 



Climatic conditions indicated by the echinoid fauna 34 



Phylogenetic series 35 



Principal criteria used in construction of phylogenetic series 35 



Statement of the phylogeny of the Pacific Coast echinoid families 37 



Scutella series 39 



Astrodapsis series 42 



Dendraster series 46 



Bibliography of the Pacific Coast Cretaceous and Cenozoic Echinoidea 49 



Systematic descriptions of species 52 



Class Echinoidea Bronn 52 



Order Cidaroida Duncan 52 



Family Cidaridae Gray 52 



Genus Cidaris Leske 52 



Cidaris lorenzanus (Arnold) 52 



Cidaris martinezensis Kew 53 



Cidaris mcrriami Arnold 53 



Cidaris tehamaensis Clark 54 ' 



Cidaris thouarsii (?) Valenciennes 54 



Cidaris sp. a Dickerson 55 



Cidaris sp. indet 55 



Order Centrechinoida Jackson 56 



Suborder Camarodonta Jackson 56 



Family Echinidae Agassiz 56 



Genus Tripneustes Agassiz 56 



Trii)neustes (Hipponoe) calif ornicus (Kew) 56 



Family Strongylocentrotidae Gregory 57 



Genus Strongylocentrotus Brandt 57 



Strongylocentrotus franciscanus A. Agassiz 57 



Strongylocentrotus purpuratus (Stimpson) 57 



