Olsson, R.K.; Pearson, P.N.; Huber, B.T. (2006). Taxonomy, biostratigraphy, and phylogeny of Eocene Catapsydrax, Globorotaloides, Guembelitrioides, Paragloborotalia, Parasubbotina, and Pseudoglobigerinella n. gen. Cushman Foundation for Foraminiferal Research Special Publication, 41, 67-110
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Olsson, R.K.; Pearson, P.N.; Huber, B.T.
2006
Taxonomy, biostratigraphy, and phylogeny of Eocene Catapsydrax, Globorotaloides, Guembelitrioides, Paragloborotalia, Parasubbotina, and Pseudoglobigerinella n. gen.
Cushman Foundation for Foraminiferal Research Special Publication