This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.
Linked specimens: USNM-184727 USNM-184728 USNM-184726
Current identification/main database link: Pseudoguembelina costellifera Masters 1976
Original Description
"Test biserial, laterally compressed, gradually expanding from initial end. Chambers 14-15 in number, slightly inflated, with tendency toward reniform shape in gerontic stage, earlier chambers wider than broad. Wall very finely perforate. Pores in single rows between costae. Surface finely and abundantly costate. Primary aperture narrow, moderatly arched. Accessory apertures on tubelike chamber extensions in interiosutural position of ephebic stage. Sutures of juvenile stage straight, normal to edge, but convex toward the aperture in adult."
Masters, B. A. (1976). Planktonic foraminifera from the Upper Cretaceous Selma group, Alabama. Journal of Paleontology. 50(2): 318-330. gsReferences:
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Pseudoguembelina costellifera compiled by the pforams@mikrotax project team viewed: 28-2-2021
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