Citation: Globoconella panda (Jenkins 1960)Taxonomic rank: speciesBasionym: Globorotalia menardii subsp. panda Jenkins 1960Synonyms:
Globorotalia (Globoconella) panda [e.g. Kennett & Srinivasan 1983]
Variants:
Globorotalia ichinosekiensis Takayanagi and Oda is similar to the southern Pacific species Globorotalia panda Jenkins in the possession of a strongly convex spiral side and a nearly flat umbilical side. It is distingushed from G. panda by its thinner wall and carina, and less strongly curved sutures on the spiral side." [Hayashi et al. 2003]
Distinguishing features: Parent taxon (Globoconella): Globorotaliids having a high-arched aperture This taxon: Convex spiral side, flattened umbilical side, and a well developed peripheral keel
NB These concise distinguishing features statements are used in the tables of daughter-taxa to act as quick summaries of the differences between e.g. species of one genus. They are being edited as the site is developed and comments on them are especially welcome.
Description
Morphology: Test low trochospiral, spiral side convex, umbilical side concave to almost flat, equatorial periphery slightly lobate, axial periphery acutely angular with a distinct thick keel; chambers strongly compressed, five in the final whorl, increasing rapidly in size; sutures on spiral side limbate strongly recurved; on umbilical side radial, depressed; surface smooth on spiral side, perforate, small pus- tules on the umbilical side; umbilicus small, aperture a very low arch bordered by a rim or lip, interiomarginal, extraumbilical. [Kennett & Srinivasan 1983]
Character matrix
test outline:
Ovate
chamber arrangement:
Trochospiral
edge view:
Spiroconvex
aperture:
Umbilical-extraumbilical
sp chamber shape:
Crescentic
coiling axis:
Low
periphery:
Single keel
aperture border:
Thin lip
umb chbr shape:
Subtriangular
umbilicus:
Narrow
periph margin shape:
Subangular
accessory apertures:
None
spiral sutures:
Flush
umb depth:
Shallow
wall texture:
Smooth
shell porosity:
Macroperforate: >2.5µm
umbilical or test sutures:
Weakly depressed
final-whorl chambers:
5-5
N.B. These characters are used for advanced search. N/A - not applicable
Biogeography and Palaeobiology
Phylogenetic relationsGr. (G.) panda is distinguished by its convex spiral side, flattened umbilical side, and a well developed peripheral keel. Gr. (G.) panda evolved from Gr. (G.) praescitula in temperate waters and is closely related to the Gr. (Menardella) archeomenardii-praemenardii plexus of the tropics. [Kennett & Srinivasan 1983]
Most likely ancestor:Globorotalia praescitula - at confidence level 3 (out of 5). Data source: Kennett & Srinivasan 1983, fig. 13.
Biostratigraphic distribution
Geological Range: Last occurrence (top): within N18 zone (5.20-5.72Ma, top in Zanclean stage). Data source: Kennett & Srinivasan 1983 First occurrence (base): within N9 zone (14.24-15.10Ma, base in Langhian stage). Data source: Kennett & Srinivasan 1983
Plot of occurrence data:
Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
Primary source for this page: Kennett & Srinivasan 1983, p.110
References:
Hayashi, H., Kurihara, Y., Horiuchi, S., Iwashita, T. & Yanagisawa, Y. (2003). Planktonic foraminifera biostratigraphy of the Miocene sequence in the Iwadono Hills, Central Japan: An Integrated approach. Palaios. 18: 176-191. gs
Jenkins, D. G. (1960). Planktonic foraminifera from the Lakes Entrance oil shaft, Victoria, Australia. Micropaleontology. 6: 345-371. gs
Kennett, J. P. & Srinivasan, M. S. (1983). Neogene Planktonic Foraminifera. Hutchinson Ross Publishing Co., Stroudsburg, Pennsylvania. 1-265. gs
Lam, A. & Leckie, R. M. (2020a). Late Neogene and Quaternary diversity and taxonomy of subtropical to temperate planktic foraminifera across the Kuroshio Current Extension, northwest Pacific Ocean. Micropaleontology. 66(3): 177-268. gs
Globoconella panda compiled by the pforams@mikrotax project teamviewed: 9-2-2025