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Haga, T.; Kase, T. (2011). Opertochasma somaensis n. sp. (Bivalvia: Pholadidae) from the Upper Jurassic in Japan: a perspective on pholadoidean early evolution. Journal of Paleontology. 85(3): 478-488.
Haga, T.; Kase, T. (2011). Opertochasma somaensis n. sp. (Bivalvia: Pholadidae) from the Upper Jurassic in Japan: a perspective on pholadoidean early evolution. Journal of Paleontology. 85(3): 478-488.