Catalog - Globorotalia irrorata Catalog - Globorotalia irrorata

CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia irrorata Loeblich & 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 irrorata
Other pages this level: << < G. hexacamerata, G. hirsuta aemiliana, G. hirsuta eastropacia, G. hispidicidaris, G. humerosa, G. hungarica, G. ikebei, G. imitata, G. inconspicua, G. inconspicua aculeata, G. inflata, G. inflata praeinflata, G. inflata triangula, G. insolita, G. involuta, G. irrorata, G. juanai, G. kajmatica, G. kilabiyaensis, G. kingmai, G. kolchidica, G. kotucensis, G. kugleri, G. lacerti, G. laeta, G. lehneri, G. lenguaensis, G. lensiformis, G. lensiformis carpatica, G. lenticularis, G. limbata conferta> >>

Globorotalia irrorata

Citation: Globorotalia irrorata Loeblich & Tappan 1957
Taxonomic rank: species
Type specimens: Holotype (USNM P5872) Figured paratype (USNM P5873)
Type sample (& lithostrat): Nanafalia formation
Type locality: Types and occurrence: Holotype (USNM P5872) from the Nanafalia formation, south valley wall of Shoal Creek, 5.5 miles southeast of Camden, along the Camden-Fatama road, Wilcox County, Alabama. Collected by A. R. Loeblich, Jr. Figured paratype (USNM P5873) from the Coal Bluff marl member of the Naheola formation, in creek bottom just west of store at Caledonia, about 1/2 mile south of the center of Sec. 29, T. 11 N., R. 10 E., Wilcox County, Alabama. Collected by F. Stearns MacNeil.
Type repository: Washington; USNM

Linked specimens: USNM-5873 USNM-5872

Current identification:


Original Description

Test free, small, trochospiral, spiral surface somewhat flattened, umbilical surface inflated, umbilicus  small and deep, periphery broadly rounded, peripheral outline gently lobulate; chambers increasing gradually in size, 4 to 5 per whorl; sutures depressed, oblique on the spiral side, radial on umbilical side; wall calcareous, finely perforate, surface covered with short blunt spines; aperture a low interiomarginal, extraumbilical-umbilical arch.

Size:
Holotype 0.26 mm. in diameter.

Etymology:
The specific name is from the Latin, irroratus, bedewed, covered with granules, and refers to the hirsute surface.

Extra details from original publication

Remarks: Globorotalia irrorata, new species, differs from Acarinina intermedia Subbotina in having lower chambers, with less rapid increase in thickness. It differs from Globigerina soldadoensis Bronnimann in having a more flattened spiral side, lower chambers, radial instead of oblique sutures on the umbUical side, and a lower, and more extraumbilical aperture.

Globorotalia convexa differs from the present species  in having broader and lower chambers, more oblique sutures, and a less broadly rounded periphery.

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 irrorata compiled by the pforams@mikrotax project team viewed: 15-8-2026

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