pforams@mikrotax - Globigerinelloides maridalensis pforams@mikrotax - Globigerinelloides maridalensis

Globigerinelloides maridalensis


Classification: pf_mesozoic -> Globigerinelloididae -> Globigerinelloides -> Globigerinelloides maridalensis
Sister taxa: G. clavatus, G. gyroidinaeformis ⟩⟨ G. algerianus, G. aptiensis, G. barri, G. ferreolensis ⟩⟨ G. blowi, G. duboisi, G. maridalensis, G. paragottisi ⟩⟨ G. elongatus, G. lobatus, G. sigali, G. sp.

Taxonomy

Citation: Globigerinelloides maridalensis (Bolli, 1959)
Taxonomic rank: species
Basionym: Planomalina maridalensis
Synonyms:
Taxonomic discussion: Globigerinelloides maridalensis displays a rather small morphological variability mainly regarding (1) the number of chambers in the last whorl (ranging from 4 to 5), (2) their backward elongation degree and, consequently, (3) the shape of the test (cross- shaped to ovoid, more or less slightly lobate) and (4) further small differences relating to the width of the umbilical area. [copied from Chronos database]

Type images:

Original description: planispiral, biumbilicate, early whorls only partly visible, equatorial periphery distinctly lobate, axial periphery rounded. Wall calcareous, finely perforate. Chambers spherical in early stage, beoming somewhat compressed laterally in last whorl. About 10 chambers arranged in 2.5 whorls; the 4-5 slightly elongate chambers of the last whorl increase fairly rapidly in size. Their longest axis is directed slightly forward. Sutures radial to oblique. Aperture a medium to low arch, bordered by a lip or rim, equatorial. Relict apertures of penultimate and earlier chambers visible in well-preserved specimens.

Entries in the Catalog of original descriptions: Planomalina maridalensis, Blowiella moulladei

Character matrix
test outline:Lobatechamber arrangement:Planispiraledge view:Hourglassaperture:Equatorial
sp chamber shape:Globularcoiling axis:Very lowperiphery:N/Aaperture border:Thin lip
umb chbr shape:Globularumbilicus:Narrowperiph margin shape:Broadly roundedaccessory apertures:Relict
spiral sutures:Moderately depressedumb depth:Shallowwall texture:Smoothshell porosity:-
umbilical or test sutures:Moderately depressedfinal-whorl chambers:4-5 N.B. These characters are used for advanced search. N/A - not applicable

Geological Range:
Last occurrence (top): within Globigerinelloides algerianus zone (116.86-118.24Ma, top in Aptian stage). Data source: copied from Chronos database, but zonal name updated from T. bejaouaensis to T. rohri
First occurrence (base): within G. blowi zone (120.55-124.40Ma, base in Barremian stage). Data source: [copied from Chronos database]

Plot of range and occurrence data:

References:

Bolli, H. M. (1959c). Planktonic foraminifera from the Cretaceous of Trinidad, B. W. I. Bulletins of American Paleontology. 39(179): 253-277. gs

BouDagher-Fadel, M., Banner, F. T., Bown, P. R., Simmons, M. D. & Gorbachik, T. N. (1995). Gorbachikella from the Hauterivian, Barremian-Aptian of Tunisia. Revue de Micropaléontologie. 38(3): 179-193. gs

Lipson-Benitah, S. & Almogi-Labin, A. (2004). Aptian planktonic foraminifera from Israel. Israel Journal of Earth Sciences. 53(1): 27-46. gs

Verga, D. & Premoli Silva, I. (2003b). Early Cretaceous planktonic foraminifera from the Tethys: The small few-chambered representatives of the genus Globigerinelloides. Cretaceous Research. 24: 305-334. gs


logo

Globigerinelloides maridalensis compiled by the pforams@mikrotax project team viewed: 5-10-2026

Taxon Search:
Advanced Search

Short stable page link: https://mikrotax.org/pforams/index.php?id=110137 Go to Archive.is to create a permanent copy of this page - citation notes



Add Comment

* Required information
Captcha Image

Comments

No comments yet. Be the first!