Arnold, R., 1909. Paleontology of the Coalinga District, Fresno and Kings Counties, California. U.S. Geological Survey Bulletin, 396: 1 -173 .
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New Species-Group Names:
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hayesi Arnold, 1909. p 62. pl. vi. f. 3.
Arnold, R., 1909. Paleontology of the Coalinga District, Fresno and Kings Counties, California. U.S. Geological Survey Bulletin, 396: 1 -173 .