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7 Rotalia implumis n. ; sample 95116, Dhak Pass, Salt Range, Pakistan; first beds of the Hangu Formation bearing foraminifera; Paleocene (SBZ 3). (A–C) Sections more or less perpendicular to the coiling axis. (D, F) Oblique, uncentered sections. (E, G–I) Approximately axial, centered sections. (G) Holotype; note the columellar superposition of the successive foliar walls. Abbreviations: f foramen, s septum, ilsp intraseptal interlocular space, pr proloculus, fol folia, foa foliar aperture, up umbilical plate, spc spiral canal Remarks: The columellar structure filling the umbilicus of R.

Blayensis) are described and illustrated. The subfamily Rotaliinae (superfamily Rotaliacea, family Rotaliidae Ehrenberg, 1839) is erected to accommodate the genus Rotalia and its immediate relatives Rotorbinella and Medocia. The group of taxa is defined by the absence of dorsal ornaments and of umbilical spaces subdivided by free-standing piles. The adaxial tips of the folia are imperforate and separated from the chamber wall by the foliar suture marked by notch in the sutural depression. The foliar tip fuses in the axial area of the shell.

1–12. 6, Fig. 5. Type locality and type level: Monte Gargano, Italy, samples A 4340, A 4344, collected by P. De Castro; Cuisian (SBZ 11–12) by association with alveolinids. Derivation of name: in honour of Piero De Castro (Naples) and his work on the Monte Gargano. Diagnosis: The lenticular shells are composed of five to six whorls of low-trochospiral chambers that are dorsally evolute and ventrally involute, with a wide umbilicus filled by thick foliar walls that are fused to a solid mass. 2); the ventral side however may be flatted in the center of the umbilicus.

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