Beckmann, J. P. (1957). Chiloguembelina Loeblich and Tappan and related Foraminifera from the Lower Tertiary of Trinidad, B.W.I. Bulletin United States National Museum. 215: 83-95.
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Beckmann, J. P.
1957
Chiloguembelina Loeblich and Tappan and related Foraminifera from the Lower Tertiary of Trinidad, B.W.I