Morphology and phylogeny of pseudorbitoid foraminifera from Jamaica and Curaçao, a revisional study
Scripta Geologica , Volume 8 p. 1- 80
In the present paper, certain morphological features and the ontogenetical development of members of the subfamily Pseudorbitoidinae Rutten, 1935 are discussed. A study of the evolution of Pseudorbitoides Douvillé, 1922 resulted in testing the concept of nepionic reduction in populations of this genus from Jamaica (Green Island- and Sunderland Inlier) and Curaçao (Cas Abao Limestone lenses). Within the Pseudorbitoides-lineage, P. trechmanni pectinata subsp. nov. is distinguished from P. trechmanni trechmanni Douvillé on account of different post-juvenile features.
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Krijnen, J.P. (1972). Morphology and phylogeny of pseudorbitoid foraminifera from Jamaica and Curaçao, a revisional study. Scripta Geologica, 8, 1–80.