Catalog entries: Turborotalia clemenciae, Globorotalia minutissima
Type images:Distinguishing features:
Parent taxon (Tenuitella): Minute to small, low trochospiral test, with globular chambers. Monolamellar, microperforate wall with a smooth or finely pustulate surface.
This taxon: Like T. munda but larger, 5 chambers in final whorl, and a more flattened lip
Morphology:
Wall type:
Character matrix
test outline: | Lobate | chamber arrangement: | Trochospiral | edge view: | Equally biconvex | aperture: | Extraumbilical-peripheral |
sp chamber shape: | Globular | coiling axis: | Low | periphery: | N/A | aperture border: | Thin lip |
umb chbr shape: | Globular | umbilicus: | Narrow | periph margin shape: | Broadly rounded | accessory apertures: | None |
spiral sutures: | Moderately depressed | umb depth: | Shallow | wall texture: | Finely pustulose | shell porosity: | Microperforate: <1µm |
umbilical or test sutures: | Strongly depressed | final-whorl chambers: | 4-5 | N.B. These characters are used for advanced search. N/A - not applicable |
Geographic distribution
Phylogenetic relations
Most likely ancestor: Tenuitella munda - at confidence level 2 (out of 5). Data source: Kennett & Srinivasan 1983, fig. 18, p1.61.
Likely descendants: Dentigloborotalia anfracta;
plot with descendants
Geological Range:
Last occurrence (top): within N17b zone (5.72-6.60Ma, top in Messinian stage). Data source: Kennett & Srinivasan 1983
First occurrence (base): within N5 zone (17.59-21.12Ma, base in Aquitanian stage). Data source: Kennett & Srinivasan 1983
Plot of occurrence data:
Primary source for this page: Kennett & Srinivasan 1983, p.164
Bolli, H. M. (1957b). Planktonic foraminifera from the Oligocene-Miocene Cipero and Lengua formations of Trinidad, B.W.I. 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: 97-123. gs Jenkins, D. G. (1971). New Zealand Cenozoic Planktonic Foraminifera. New Zealand Geological Survey, Paleontological Bulletin. 42: 1-278. gs Kennett, J. P. & Srinivasan, M. S. (1983). Neogene Planktonic Foraminifera. Hutchinson Ross Publishing Co., Stroudsburg, Pennsylvania. 1-265. gsReferences:
Tenuitella clemenciae compiled by the pforams@mikrotax project team viewed: 20-9-2024
Short stable page link: https://mikrotax.org/pforams/index.php?id=104233 Go to Archive.is to create a permanent copy of this page - citation notes |