Globigerinella siphonifera


Classification: pf_cenozoic -> Globigerinidae -> Globigerinella -> Globigerinella siphonifera
Sister taxa: G. adamsi, G. calida, G. radians, G. siphonifera, G. clavaticamerata, G. molinae, G. navazuelensis, G. obesa, G. praesiphonifera, G. pseudobesa, G. roeglina, G. megaperta, G. wagneri, G. sp.,

Taxonomy

Citation: Globigerinella siphonifera (d'Orbigny, 1839)
Rank: species
Basionym: Globigerina siphonifera d'Orbigny, 1839
Synonyms:
Variants:
Taxonomic discussion:
There has been variable use of the names G. aequilateralis and G. siphonifera. For example Kennett & Srinivasan (1983, p.238) state that "Banner and Blow (1960) considered Ge. aequilateralis (Brady) as a junior synonym of Ge. siphonifera (d'Orbigny), In the present work, we retain the name aequilateralis for the reasons stated by Todd (1963, p.110) and Saito et al. (1976, p.281)."
Here we follow Aze et al. 2011 and SCOR-WG138 (Brummer & Kucera 2014) in using G. siphonifera

Catalog entries: Globigerina siphonifera, Globigerina aequilateralis, Globigerina aequilateralis involuta

Type images:

Distinguishing features: Near planispiral coiling & spherical chambers

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


Diagnostic characters: Initially trochospiral becoming planispiral, evolute

Aperture: Interiomarginal wide equatorial arch without rim or lip [Aze 2011, based on Kennett & Srinivasan 1983]

Coiling direction (in extant population): mixed


Wall type: Spinose; Hispid [Aze 2011]

Test morphology: Test low trochospiral in the early stage , nearly planispiral in the adult, evolute; equatorial periphery distinctly lobulate; axial periphery broadly rounded; chambers globular to subglobular, 5 to 6 rapidly enlarging chambers in the final whorl; sutures radial, depressed; surface finely hispid and densely perforate , spinose; spines simple rounded, which become triradiate with growth; surface with uniformly distributed circular pores , interpore area almost smooth; aperture in the adult interiomarginal, wide equatorial arch without a lip or rim. [Kennett & Srinivasan 1983 - as G. aequiateralis]

Size: >250µm

Character matrix

test outline:Lobatechamber arrangement:Pseudoplanispiraledge view:Equally biconvexaperture:Equatorial
sp chamber shape:Globularcoiling axis:Very lowperiphery:N/Aaperture border:N/A
umb chbr shape:Globularumbilicus:Wideperiph margin shape:Broadly roundedaccessory apertures:None
spiral sutures:Strongly depressedumb depth:Deepwall texture:Cancellateshell porosity:Macroperforate: >2.5µm
umbilical or test sutures:Strongly depressedfinal-whorl chambers:5.0-6.0 N.B. These characters are used for advanced search. N/A - not applicable

Biogeography and Palaeobiology


Geographic distribution: Tropical to temperate. Low to middle latitudes [Aze et al. 2011, based on Kennett & Srinivasan (1983)]

In modern oceans an abundant, temperate water, species [SCOR WG138]


Isotope paleobiology: Aze et al. 2011 ecogroup 3 - Open ocean thermocline. Based on light ∂13C and relatively heavy ∂18O Cited sources (Aze et al. 2011 appendix S3): Vergnaud-Grazzini (1976)

Phylogenetic relations: Juvenile forms of Ge. aequilateralis (with a distinct trochospiral test) resemble Globigerinella praesiphonifera. [Kennett & Srinivasan 1983]

Molecular Genotypes (data from PFR2 database, June 2017, References: Darling et al. 1997; Darling & Wade 2008; de Vargas et al. 2002; Ujiié & Lipps 2009; Ujiié et al. 2012; Seears et al. 2012; Weiner et al. 2014; Weiner et al. 2015) 

Most likely ancestor: Globigerinella praesiphonifera - at confidence level 3 (out of 5). Data source: Kennett & Srinivasan 1983, fig. 26.
Likely descendants: Beella praedigitata; Globigerinella calida; Globigerinella radians; Hastigerina pelagica;

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant Data source: present in the plankton (SCOR WG138)
First occurrence (base): within N12 zone (11.79-13.41Ma, base in Serravallian stage). Data source: Kennett & Srinivasan 1983 (recorded as G. aequilateralis)

Plot of occurrence data:

References:

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

Brady, H. B. (1879). Notes on some of the reticularian Rhizopoda of the "Challenger" expedition. I.- On new or little known arenaceous types. Quarterly Journal of Microscopical Science. 19: 20-63. gs

Brummer, G. J. A. & Kucera, M. (2014). SCOR/ICBP 138 taxonomy and key to species of modern planktonic foraminfera v2.1. Chart distributed at TMS FNG meeting Texel, The Netherlands, June 2014. 1-. gs

d'Orbigny, A. (1839a). Foraminiferes. In, de la Sagra, R. (ed.) Histoire physique et naturelle de l'Ile de Cuba. A. Bertrand, Paris, France 1-224. gs

Darling, K. F. & Wade, C. M. (2008). The genetic diversity of planktic foraminifera and the global distribution of ribosomal RNA genotypes. Marine Micropaleontology. 67: 216-238. gs

Darling, K. F., Wade, C. M., Kroon, D. & Brown, A. J. L. (1997). Planktic foraminiferal molecular evolution and their polyphyletic origins from benthic taxa. Marine Micropaleontology. 30: 251-266. gs

de Vargas, C., Bonzon, M., Rees, N. W., Pawlowski, J. & Zaninetti, L. (2002). A molecular approach to biodiversity and biogeography in the planktonic foraminifer Globigerinella siphonifera (d’Orbigny). Marine Micropaleontology. 45: 101-116. gs

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

Loeblich, A. & Tappan, H. (1994). Foraminifera of the Sahul shelf and Timor Sea. Cushman Foundation for Foraminiferal Research, Special Publication. 31: 1-661. gs

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

Postuma, J. A. (1971). Manual of planktonic foraminifera. Elsevier for Shell Group, The Hague. 1-406. gs

Saito, T., Thompson, P. R. & Breger, D. (1976). Skeletal ultra-microstructure of some elongate-chambered planktonic foraminifera and related species. In, Takayanagi, Y. & Saito, T. (eds) Progress in Micropaleontology, Special Publication. Micropaleontology Press, The American Museum of Natural History, New York 278-304. gs

Seears, H. A., Darling, K. F. & Wade, C. M. (2012). Ecological partitioning and diversity in tropical planktonic foraminifera. BMC Evolutionary Biology. 12(54): 1-15. gs

Todd,R. (1963). Nomenclature of foraminifera. Contributions from the Cushman Foundation for Foraminiferal Research. 14(3): 109-111. gs

Ujiié, Y. & Lipps, J. H. (2009). Cryptic diversity in planktonic foraminifera in the northwest Pacific ocean. Journal of Foraminiferal Research. 39: 145-154. gs

Ujiié, Y., Asami, T., de Garidel-Thoron, T., Liu, H., Ishitani, Y. & de Vargas, C. (2012). Longitudinal differentiation among pelagic populations in a planktic foraminifer. Ecol. Evol.. 2: 1725-1737. gs

Vergnaud-Grazzini, C. (1976). Non-equilibrium isotopic compositions of shells of planktonic foraminifera in the Mediterranean Sea. Palaeogeography, Palaeoclimatology, Palaeoecology. 20: 263-276. gs

Weiner, A. K. M., Weinkauf, M. F. G., Kurasawa, A., Darling, K. F., Kucera, M. & Grimm, G. W. (2014). Phylogeography of the tropical planktonic foraminifera lineage Globigerinella reveals isolation inconsistent with passive dispersal by ocean currents. PLoS One. 9: e92148-. gs

Weiner, A. K. M., Weinkauf, M. F. G., Kurasawa, A., Darling, K. F. & Kucera, M. (2015). Genetic and morphometric evidence for parallel evolution of the Globigerinella calida morphotype. Marine Micropaleontology. 114: 19-35. gs


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Globigerinella siphonifera compiled by the pforams@mikrotax project team viewed: 17-9-2019

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