Hayami, I. (1960). Pelecypods of the Jusanhama Group (Purbeckian or Wealden) in Hashiura Area, Northeast Japan. Japanese Journal of Geology and Geography. 31(1): 13-21.
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Hayami, I.
1960
Pelecypods of the Jusanhama Group (Purbeckian or Wealden) in Hashiura Area, Northeast Japan