Citation: Globorotalia perclara Loeblich and Tappan 1957Rank: SpeciesType specimens: Holotype (USNM P5356) & numerous paratypes from various localities.Type sample (& lithostrat): Brightseat formationType locality: 1 mile west-southwest of Brightseat and 0.2 mile south of Sheriff Road, Prince Georges County, Maryland. Type repository: Washington; USNM
Original Description Test free, trochospiral, sides flattened, umbilicus small, peripheral margin broadly rounded, peripheral outline lobulate; 5 to 6 chambers in the final whorl, increasing gradually in size as added, rounded to ovate in shape, or may somewhat overhang the preceding suture, of somewhat gieater breadth than height on the spiral side, and commonly somewhat excavated near the spiral suture, elevated near the periphery; sutures distinct, depressed, curved back at the periphery on the spiral side, radial on the umbilical side; wall calcareous, finely perforate, surface smooth to finely hispid on the spiral side, distinctly spinose on the umbUical side; aperture a small, interiomarginal, extraumbilical-umbilical arch. Size: Holotype 0.26 mm. in diameter. Etymology: Extra details from original publication
Globigerina cf. pseudo-bulloides Plummer, Shifflet, Maryland Dep. Geol., Mines and Water Resources Bull. 3, p. 71, pi. 4, figs. 14, 15, 1948.
Remarks: The specimens from the Aquia formation of Aquia Creek, Virginia, referred by Shifflet (1948) to Globigerina cf. pseudobulloides Plummer, belong to the present species. It differs from G. pseudobulloides (which is here considered also a Globorotalia) in the much smaller size, lower chambers, which increase more slowly in size, and the very prominently spinose umbilical side. Globorotalia reissi, new species, is similar in size, but has a more convex spiral side, and a nearly smooth surface. Editors' Notes
Loeblich, A. R. & Tappan, H. (1957b). Planktonic foraminifera of Paleocene and early Eocene Age from the Gulf and Atlantic coastal plains. In, Loeblich, A. R. , Jr., Tappan, H., Beckmann, J. P., Bolli, H. M., Montanaro Gallitelli, E. & Troelsen, J. C. (eds) Studies in Foraminifera. U.S. National Museum Bulletin . 215: 173-198. gsVO
Globorotalia perclara compiled by the pforams@mikrotax project teamviewed: 4-12-2022