Cushman, J. A. (1936). New genera and species of the families Verneuilinidae and Valvulinidae and of the subfamily Virgulininae. Special Publ. No. 6, Cushman Lab. Foram. Res. 1-71.
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Cushman, J. A.
1936
New genera and species of the families Verneuilinidae and Valvulinidae and of the subfamily Virgulininae