Lam & Leckie 2020 pl05 06-7.jpg
Lam & Leckie 2020 pl05 06-7.jpg
Catalog entries: Globigerina elongata, Globigerina canariensis, Globigerina gomitulus, Globigerinoides elongata bikiniensis, Globigerinoides elongata cedrosensis, Globigerina cyclostoma, Globigerina dubiata
Type images:
lectotype: G. elongataDistinguishing features:
Parent taxon (Globigerinoides): Supplementary apertures, with ruber/sacculifer-type spinose wall texture
This taxon: Like Gs. ruber but final chamber is asymmetrically flattened (compressed)
Coiling direction (in extant population): mixed
Emended description:
Morphology:
Wall type:
Size:
Character matrix
| test outline: | Lobate | chamber arrangement: | Trochospiral | edge view: | Equally biconvex | aperture: | Umbilical |
| sp chamber shape: | Globular | coiling axis: | Moderate | periphery: | N/A | aperture border: | N/A |
| umb chbr shape: | Globular | umbilicus: | Wide | periph margin shape: | Broadly rounded | accessory apertures: | Sutural |
| spiral sutures: | Strongly depressed | umb depth: | Deep | wall texture: | Cancellate | shell porosity: | Macroperforate: >2.5µm |
| umbilical or test sutures: | Strongly depressed | final-whorl chambers: | 4.0-4.0 | N.B. These characters are used for advanced search. N/A - not applicable | |||
In modern oceans an abundant, warm water, species [SCOR WG138]
Similar species
Geographic distribution
Isotope paleobiology
Phylogenetic relations
NB These genotypes were previously classified as G. ruber IIa, but were reclassified as G. elongatus by Aurahs et al. (2011), they also suggest it is most likely to have evolved from G. extremus.
Most likely ancestor: Globigerinoides conglobatus - at confidence level 4 (out of 5). Data source: Morard et al. (2019) - based on mol gen data. NB Aurahs et al. (2011) suggested origin from G. extremus..
Likely descendants: Globigerinoides tenellus;
plot with descendants
Geological Range:
Notes: Rarely separated in the fossil record, but Aurahs et al. (2011) estimated a divergence age of 1.2-4.6Ma from molecular clock approach
Last occurrence (top): Extant. Data source: present in the plankton (SCOR WG138)
First occurrence (base): within Pliocene Epoch (2.59-5.33Ma, base in Zanclean stage). Data source: Perconig 1969, Aurahs et al. 2011
Plot of occurrence data:
André, A. et al. (2014). SSU rDNA Divergence in Planktonic Foraminifera: Molecular Taxonomy and Biogeographic Implications. PLoS One. 9: e104641-. gs V O Aurahs, R., Treis, Y., Darling, K. & Kucera, M. (2011). A revised taxonomic and phylogenetic concept for the planktonic foraminifer species Globigerinoides ruber based on molecular and morphometric evidence. Marine Micropaleontology. 79: 1-14. gs Aze, T. et al. (2011). A phylogeny of Cenozoic macroperforate planktonic foraminifera from fossil data. Biological Reviews. 86: 900-927. gs Brummer, G-J. A. & Kucera, M. (2022). Taxonomic review of living planktonic foraminifera. Journal of Micropalaeontology. 41: 29-74. gs V O d'Orbigny, A. (1826). Tableau methodique de la Classe de Cephalopodes. Annales des Sciences Naturelles, Paris. 7: 245-314. gs V O 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 McCulloch, I. A. (1977). Qualitative observations on Recent foraminiferal tests with emphasis on the eastern Pacific (3 vols). University of Southern California, Los Angeles. -. gs Morard, R. et al. (2019a). Genetic and morphological divergence in the warm-water planktonic foraminifera genus Globigerinoides. PLoS One. 14(12): 1-30. gs V O Schiebel, R. & Hemleben, C. (2017). Planktic Foraminifers in the Modern Ocean. Springer-Verlag, Heidelberg. 1-358. gs Seguenza, G. (1880). Le foramazioni terziarie nella provincia di Reggio (Calabria),. Rendiconti. Accademia Nazionale dei Lincei, Classe. 1-466. gs V OReferences:
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Globigerinoides elongatus compiled by the pforams@mikrotax project team viewed: 28-1-2023
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