Woodring, W. P. (1930). Upper Eocene orbitoid foraminifera from the western Santa Ynez Range, California, and their stratigraphic significance. Transactions of the San Diego Society of Natural History. 6(4): 145-170.
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Woodring, W. P.
1930
Upper Eocene orbitoid foraminifera from the western Santa Ynez Range, California, and their stratigraphic significance.
Transactions of the San Diego Society of Natural History