Baldauf, J.G. & Barron, J.A. (1980). Actinocyclus ingens var. nodus: a new, stratigraphically useful diatom of the circum-North Pacific. Micropaleontology, 28(1): 103-110
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Baldauf, J.G. & Barron, J.A.
1980
Actinocyclus ingens var. nodus: a new, stratigraphically useful diatom of the circum-North Pacific