MacGillavry, H. J., 1963, Phylomorphogenesis and evolutionary trends of Cretaceous orbitoidal foraminifera, in G. H. R. von Koenigswald, et al., ed., Evolutionary Trends in Foraminifera. Amsterdam: Elsevier, pp. 139-196.
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MacGillavry, H. J., 1963, Phylomorphogenesis and evolutionary trends of Cretaceous orbitoidal foraminifera, in G. H. R. von Koenigswald, et al., ed., Evolutionary Trends in Foraminifera. Amsterdam: Elsevier, pp. 139-196.