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Published 1930 | Published
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A Tertiary Vertebrate Fauna from the Upper Cuyama Drainage Basin, California


[Introduction] The discovery of Tertiary mammalian remains in the vicinity of Apache Canyon, in the upper Cuyama drainage basin, Ventura County, California, was made by Mr. John B. Stevens, geologist of the Associated Oil Company. Further collecting in this region has furnished a fauna of considerable stratigraphic and biologic significance. An investigation of the geologic features of the area and of the vertebrate collection was undertaken primarily with a view to establishing the position and relationships of the fossil assemblage in the sequence of Tertiary faunas known from the Pacific Coast and Great Basin provinces. A geologic study of the area in which the mammal-bearing beds occur and of the adjacent Lockwood Valley region to the east is still in progress.

Additional Information

With four plates and five text-figures. The present study was suggested by Doctor Chester Stock, of the California Institute of Technology, to whom the author is greatly indebted for valuable advice during the progress of the investigation and patient criticism of the manuscript. The author wishes also to acknowledge the courtesy extended by Mr. Donald R. Dickey and his staff at the California Institute of Technology in allowing unreserved use of their excellent library and collection of recent mammals. The drawings were made by Mr. John L. Ridgway.

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August 19, 2023
January 14, 2024