Globorotalia (Turbototalia) akersi Quilty 1976 from: Quilty, P.G.. (1976): Planctonic foraminifera DSDP Leg 34- Nazca Plata . DSDP initial reports Vol. 34 | . |
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Species Globorotalia (Turbototalia) akersi Quilty 1976 |
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| Diagnosis / Definition: |
Quilty (1976):
Diagnosis; Distinguished from similar species by its small, high arched aperture which extends from the periphery halfway to the umbilicus. Apertural flap small, distinct.
Description: Test small (0.12-0.20 mm), smooth, 4 to 4-1/4
chambers in the final whorl, chambers longer tangentially than radially. Dorsal surface, a low convex dome, central details obscured by overgrowth. Intercameral sutures of the final whorl broadly and shallowly depressed, the actual chamber contact well marked; quite markedly recurved distally. Periphery lobulate; angled but not keeled. Ventral surface also a low dome. Intercameral sutures straight, radial, broadly and shallowly depressed, chamber contact distinct. Surface of first two chambers of final whorl finely pustulose, whether naturally or by overgrowth is not clear. Umbilicus shallow, broadly depressed. Aperture completely extraumbilical, a small, high arch beginning Vi to % of distance to the periphery and extending to or slightly over the periphery; furnished
with a small but obvious apertural flap which is most strongly developed at the midpoint of the aperture.
Wall thin, extremely finely perforate. |
| Discussion / Comments: |
Quilty (1976):
Remarks: See under G. (T.) bauerensis n. sp.
Origin of name: In honor of Dr. W.H. Akers, a pioneer worker in the field of planktonic foraminifera. |
| Synonym list: |
Quilty (1976):
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| References: |
Quilty,P.G.. (1976):
Planctonic foraminifera DSDP Leg 34- Nazca Plata . DSDP initial reports Vol. 34
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