Vaughan. T.W. (1928): Notes on the types of Lepidocyclina mantelli (Morton) Gümbel and on topotypes of Nummulites floridanus Conrad. - Proc. Acad. nat. Sci. Philadelphia 2(1927): .229-303.
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Vaughan. T.W. (1928): Notes on the types of Lepidocyclina mantelli (Morton) Gümbel and on topotypes of Nummulites floridanus Conrad. - Proc. Acad. nat. Sci. Philadelphia 2(1927): .229-303.