Globoconella pliozea


Classification: pf_cenozoic -> Globorotaliidae -> Globoconella -> Globoconella pliozea
Sister taxa: G. inflata, G. puncticulata, G. sphericomiozea, G. terminalis, G. pliozea, G. conomiozea, G. conoidea, G. miozea, G. panda, G. sp.,

Taxonomy

Citation: Globoconella pliozea (Hornibrook 1982)
Rank: species
Basionym: Globorotalia pliozea

Catalog entries: Globorotalia pliozea

Type images:

Distinguishing features: Biconvex, with keel

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: Trochospiral, biconvex, equatorial periphery lobulate with keel, sutures are raised on spiral side

Aperture: Interiomarginal umbilical-extraumbilical slit with a thickened rim [Aze 2011, based on Wei 1994]


Wall type: Non-spinose; Cancellate (weakly developed) [Aze 2011]

Character matrix

test outline:Subcircularchamber arrangement:Trochospiraledge view:Equally biconvexaperture:Umbilical-extraumbilical
sp chamber shape:Crescenticcoiling axis:Lowperiphery:Single keelaperture border:Thin lip
umb chbr shape:Subtriangularumbilicus:Narrowperiph margin shape:Subangularaccessory apertures:None
spiral sutures:Flushumb depth:Shallowwall texture:Smoothshell porosity:Macroperforate: >2.5µm
umbilical or test sutures:Weakly depressedfinal-whorl chambers:4.0-4.5 N.B. These characters are used for advanced search. N/A - not applicable

Biogeography and Palaeobiology


Geographic distribution: 0 [Aze et al. 2011, based on Wei (1994)]

[SCOR WG138]


Isotope paleobiology: Aze et al. 2011 ecogroup 3 - Open ocean thermocline. Based on light ∂13C and relatively heavy ∂18O. Sources cited by Aze et al. 2011 (appendix S3): Schneider & Kennett (1996)

Most likely ancestor: Globoconella terminalis - at confidence level 3 (out of 5). Data source: Wei 1994, fig. 1.

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within PL1 [Atl.] zone (4.37-5.72Ma, top in Zanclean stage). Data source: Wei 1994 (quoted age converted to modern zone)
First occurrence (base): within PL1 [Atl.] zone (4.37-5.72Ma, base in Messinian stage). Data source: Wei 1994 (quoted age converted to modern zone)

Plot of occurrence data:

References:

Aze, T. et al. (2011). A phylogeny of Cenozoic macroperforate planktonic foraminifera from fossil data. Biological Reviews. 86: 900-927. gs

Hornibrook, N. d. B. (1982). Late Miocene to Pleistocene Globorotalia (Foraminiferida) from Deep Sea Drilling Project Leg 29, Site 284, Southwest Pacific. New Zealand Journal of Geology and Geophysics. 25: 83-99. gs

Schneider, C. E. & Kennett, J. P. (1996). Isotopic evidence for interspecies habitat differences during evolution of the Neogene planktonic foraminiferal clade Globoconella. Paleobiology. 22: 282-303. gs

Wei, K. -Y. (1994b). Stratophenetic tracing of phylogeny using SIMCA pattern recognition technique: a case study of the late Neogene planktic foraminifera Globoconella clade. Paleobiology. 20(1): 52-65. gs


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Globoconella pliozea compiled by the pforams@mikrotax project team viewed: 18-9-2019

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