CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia perclara Loeblich and Tappan 1957

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.


Higher levels: pf_cat -> G -> Globorotalia -> Globorotalia perclara
Other pages this level: << < G. naussi, G. neominutissima, G. nicobarica, G. nicolae, G. nicoli, G. obesa, G. occlusa, G. opima continuosa, G. opima nana, G. opima opima, G. orientalis, G. oscitans, G. palmerae, G. paniae, G. pentacamerata, G. perclara, G. perconigi, G. perforataminuta, G. pertenuis, G. petaliformis, G. planocompressa, G. planocompressa evoluta, G. planocompressa planocompressa, G. planoconica, G. planoconvexa, G. platispira, G. pliozea, G. praemargaritae, G. praemenardii, G. praemiocenica, G. praenartanensis, > >>

Globorotalia perclara

Citation: Globorotalia perclara Loeblich and Tappan 1957
Rank: Species
Type locality: 1 mile west-southwest of Brightseat and 0.2 mile south of Sheriff Road, Prince Georges County, Maryland.
Type sample and level: Brightseat formation
Holotype Repository: Washington; USNM
Type & figured specimens: Holotype (USNM P5356) & numerous paratypes from various localities.

Linked specimens: USNM-5823 USNM-5825 USNM-5135 USNM-5356 USNM-5135 USNM-5824 USNM-5826 USNM-5827 USNM-472997 USNM-5822 USNM-472996 USNM-472998 USNM-5826 USNM-5821 USNM-5828

Current identification/main database link:


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.

Extra details from original publication
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.

References:

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. gs


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Globorotalia perclara compiled by the pforams@mikrotax project team viewed: 9-12-2019

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