L_and_T-1957 pl61-07.JPG
L_and_T-1957 pl56-03.JPG
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L_and_T-1957 pl61-07.JPG
L_and_T-1957 pl56-03.JPGLinked specimens: USNM-5851 USNM-5850
Current identification:
Original Description
Test free, trochospiral, biconvex, spire nearly flat, umbilicus small and deep, periphery rounded, peripheral outline lobulate; chambers globular, increasing rapidly in size, forming about 2½ whorls, commonly with 4 to 5 chambers in the final whorl; sutures distinct, constricted, gently curved to radial; wall calcareous, distinctly perforate throughout, surface finely but prominently hispid; aperture an interiomarginal, extraumbilical-umbilical, high, broad arch.
Size: Greatest diameter of holotype 0.30 mm. Paratype 0.28 mm. in diameter.
Etymology: The specific name comes from the Latin tribiilosus,thorny, and refers to the spinose wall.
Extra details from original publication
Remarks: The species somewhat resembles Globorotalia pseudobulloides (Plummer) in general appearance, differing in the spinose surface. It differs from Globigerina esnaensis LeRoy in being much smaller, and in having more globular chambers.
Editors' Notes
Has been cited as Acarinina Globorotalia tribulosa Loeblich & Tappan 1957
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 V OReferences:
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Globorotalia tribulosa compiled by the pforams@mikrotax project team viewed: 19-4-2021
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