Globorotalia limbata

NB TAXA WHICH ORIGINATE IN THE OLIGOCENE ARE NOT INCLUDED YET
Classification: pf_neogene -> Globorotalidae -> Globorotalia -> menardii lineage -> Globorotalia limbata
Sister taxa: G. archeomenardii, G. exilis, G. limbata, G. menardii, G. miocenica, G. multicamerata, G. pertenuis, G. praemenardii, G. pseudomiocenica,

Taxonomy

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

Catalog entries: Globorotalia praemiocenica; Rotalia limbata;

Type images:

Description


Diagnostic characters: Lenticular, low trochospiral, prominent keel and densely perforate surface

Aperture: : Interiomarginal umbilical-extraumbilical low-arched slit with lip [Aze 2011, based on Kennett & Srinivasan 1983]


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

Test morphology: 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]

Biogeography and Palaeobiology


Geographic distribution: Tropical to warm Subtropical. [Kennett & Srinivasan 1983]

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]

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 Serravallian 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 & Srinivisan 1983, p.124

References:

Aze, T.; Ezard, T.H.G.; Purvis, A.; Coxall, H.K.; Stewart, D.R.M.; Wade, B.S. & Pearson, P.N.P., (2011). A phylogeny of Cenozoic macroperforate planktonic foraminifera from fossil data. Biological Reviews, 86: 900-927.

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

Blow, W.H., (1969). Late middle Eocene to Recent planktonic foraminiferal biostratigraphy. In: Bronnimann, P. and Renz, H.H. (Editors), Proceedings of the First International Conference on Planktonic Microfossils, Geneva, 1967, Leiden, Netherlands, pp. 380-381.

Fornasini, C., (1902). Sinossi metodica dei foraminiferi sin qui rinvenuti nella sabbia del lido di Rimini. Accad. Sci. Ist. Bologna, Mem. Sci. Nat., Ser. 5, 10: +56+.

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


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Globorotalia limbata compiled by the pforams@mikrotax project team viewed: 26-9-2017

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AphiaID: 1026387 Nomenclatural data on WoRMS
Go to Archive.is to create a permanent copy of this page - citation notes



AphiaID: 1026387 Nomenclatural data on WoRMS
Go to Archive.is to create a permanent copy of this page - citation notes

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