Ogasawara, K. (1977) Paleontological analysis of Omma fauna from Toyama-Ishikawa area, Hokuriku Province, Japan. The Science Reports, second series (Geology), Tôhoku University, 47, 43–156, pls. 5–25.
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Ogasawara, K.
1977
Paleontological analysis of Omma fauna from Toyama-Ishikawa area, Hokuriku Province, Japan