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Reliable records of localities are indispensable for paleontologic as well as stratigraphic studies of ammonites. A considerable number of papers have hitherto been published in which local stratigrap...hy is described. Although specific names of ammonites may not have been thoroughly listed in these previous papers, the stratigraphic subdivisions established in them can be referred to. Yet I think that probably more than ten years persistent field work will be needed for satisfactory study of the Upper Cretaceous ammonites of California. Since the period of my stay in California was limited, I could not, of course, fulfill this requirement. But, owing to kind help of the professors and many other friends, I visited several places to examine stratigraphic sections and have got some new acquisition. The descriptive notes of local stratigraphy in this chapter depend principally on already published records, but may include some new information as well as my own views. I will record the names of the kind friends who have allowed me to describe in this paper new information which they supplied me. Regarding the stratigraphy of the Redding area, Shasta County and the Santa Ana Mountains I depend very much on Dr. W. P. POPENOE’S published and also unpublished work. Therefore joint authorship is taken for Notes on Stratigraphy of these two areas：articles(2)and(9) in the following description.続きを見る
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