pforams@mikrotax - Globorotalia limbata pforams@mikrotax - Globorotalia limbata

Globorotalia limbata

Classification: pf_cenozoic -> Globorotaliidae -> Globorotalia -> menardii lineage -> Globorotalia limbata
Sister taxa: G. pertenuis, G. exilis ⟩⟨ G. multicamerata, G. miocenica, G. pseudomiocenica, G. limbata ⟩⟨ G. menardii, G. praemenardii, G. archeomenardii


Citation: Globorotalia limbata d'Orbigny, in Fornasini 1902
taxonomic rank: species
Basionym: Rotalia limbata d'Orbigny, in Fornasini 1902
Synonyms: NB Globorotalia pseudomiocenica Bolli and Bermudez was also considered a synonym by Blow (1969) & Kennett & Srinivasan (1983), but is now regarded as discrete species.
Taxonomic discussion: Lectotype designated by Banner & Blow 1960

Catalog entries: Rotalia limbata, Globorotalia praemiocenica

Type images:

Distinguishing features:
Parent taxon (menardii lineage): G. archeomenardii - menardii, limbata - miocenica & exilis - pertenius lineages
This taxon: Like G. menardii but uniformly increasing chambers in the final whorl; spiral sutures, initially straight then become sharply curved near the periphery, giving a hockey-stick shape

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.


Test medium, lenticular, low trochospiral, equatorial periphery lobulate, axial periphery acute with a pronounced keel; chambers 6 to 8 in the final whorl, slowly increasing in size as added; chambers on umbilical side more highly vaulted and inflated than those of spiral side; sutures on spiral side limbate, thickened where merging into keel; on umbilical side sinuous to radial, depressed; surface smooth, uniformly and densely perforate; umbilicus a narrow pit; aperture a low arch bordered by a lip. [Kennett & Srinivasan 1983]

Wall type:
Non-spinose; Smooth [Aze 2011]

Character matrix
test outline:Lobatechamber arrangement:Trochospiraledge view:Equally biconvexaperture:Umbilical-extraumbilical
sp chamber shape:Crescenticcoiling axis:Lowperiphery:Single keelaperture border:Thick lip
umb chbr shape:Subtriangularumbilicus:Narrowperiph margin shape:Subangularaccessory apertures:None
spiral sutures:Raisedumb depth:Shallowwall texture:Smoothshell porosity:Macroperforate: >2.5µm
umbilical or test sutures:Weakly depressedfinal-whorl chambers:6-8 N.B. These characters are used for advanced search. N/A - not applicable

Biogeography and Palaeobiology

Geographic distribution

Tropical to warm Subtropical. [Kennett & Srinivasan 1983] Low latitudes [Aze et al. 2011, based on Kennett & Srinivasan (1983)]

[SCOR WG138]

Isotope paleobiology
Aze et al. 2011 ecogroup 3 - Open ocean thermocline. Based on comparison with other species of the genus

Phylogenetic relations
Gr. (M.) limbata is distinguished from its ancestral form Gr. (M.) menardii by the uniformly increasing chambers in the final whorl and by spiral sutures, which are nearly straight for most of their length but become sharply curved near the periphery, giving a hockey-stick shape (Blow, 1969).
Gr. (M.) limbata evolved from Gr. (M.) menardii and is the ancestor of Gr. (M.) multicamerata. [Kennett & Srinivasan 1983]

Most likely ancestor: Globorotalia menardii - at confidence level 4 (out of 5). Data source: Kennett & Srinivasan 1983, fig. 14; Stewart 2003 fig. 6.10; Aze et al. 2011, appendix 5.
Likely descendants: Globorotalia exilis; Globorotalia multicamerata; Globorotalia pseudomiocenica; plot with descendants

Biostratigraphic distribution

Geological Range:
Last occurrence (top): at top of PL5 [Atl.] zone (100% up, 2.4Ma, in Gelasian stage). Data source: Wade et al. (2011), zonal marker
First occurrence (base): near top of M11 zone (87% up, 10.6Ma, in Tortonian stage). Data source: Wade et al. (2011), additional event; position within zone determined by linear interpolation from data in table 1 of Wade et al. (2011).

Plot of occurrence data:

Primary source for this page: Kennett & Srinivasan 1983, p.124


Banner, F. T. & Blow, W. H. (1960a). Some primary types of species belonging to the superfamily Globigerinaceae. Contributions from the Cushman Foundation for Foraminiferal Research. 11: 1-41. gs O

Blow, W. H. (1969). Late middle Eocene to Recent planktonic foraminiferal biostratigraphy. In, Bronnimann, P. & Renz, H. H. (eds) Proceedings of the First International Conference on Planktonic Microfossils, Geneva, 1967. E J Brill, Leiden 380-381. gs

d'Orbigny, A. (1826). Tableau methodique de la Classe de Cephalopodes. Annales des Sciences Naturelles, Paris. 7: 245-314. gs

Fornasini, C. (1902). Sinossi metodica dei foraminiferi sin qui rinvenuti nella sabbia del lido di Rimini. Memorie della Reale Accademia della scienze dell'Istituto di Bologna. 10: 1-68. gs

Kennett, J. P. & Srinivasan, M. S. (1983). Neogene Planktonic Foraminifera. Hutchinson Ross Publishing Co., Stroudsburg, Pennsylvania. 1-265. gs

Norris, R. D. (1998). Planktonic foraminifer biostratigraphy: Eastern Equatorial Atlantic. Proceedings of the Ocean Drilling Program, Scientific Results. 159: 445-479. gs O


Globorotalia limbata compiled by the pforams@mikrotax project team viewed: 24-5-2024

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