Kaim, A.; Jenkins, R. G.; Hikida, Y. (2009). Gastropods from Late Cretaceous Omagari and Yasukawa hydrocarbon seep deposits in the Nakagawa area, Hokkaido, Japan. Acta Palaeontologica Polonica. 54(3): 463-490.
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Kaim, A.; Jenkins, R. G.; Hikida, Y.
2009
Gastropods from Late Cretaceous Omagari and Yasukawa hydrocarbon seep deposits in the Nakagawa area, Hokkaido, Japan