Globorotalia crassaconica

NB TAXA WHICH ORIGINATE IN THE OLIGOCENE ARE NOT INCLUDED YET
Classification: pf_neogene -> Globorotalidae -> Globorotalia -> truncatulinoides lineage -> Globorotalia crassaconica
Sister taxa: G. crassaconica, G. excelsa, G. hessi, G. oceanica, G. pachytheca, G. ronda, G. tenuitheca, G. viola, G. cavernula, G. truncatulinoides, G. tosaensis, G. crassaformis, G. crassula,

Taxonomy

Citation: Globorotalia crassaconica Hornibrook, 1981
Rank: species
Basionym: Globorotalia crassaconica

Catalog entries: Globorotalia crassaconica;

Type images:

NB The short diagnoses are used in the tables of daughter-taxa to act as quick summaries of the differences between e.g. species of one genus. They have initially been copied from the diagnostic characters/distinguishing features sections of the Eocene and Paleocene Atlases, they will be edited as the site is developed.

Description


Diagnostic characters: Ventroconical, steep conical umbilical side, keeled, heavily pustulate test

Aperture: : Interiomarginal umbilical-extraumbilical low-arched slit [Aze 2011, based on D. R. M. Stewart unpublished data]


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

Biogeography and Palaeobiology


Isotope paleobiology: Aze et al. 2011 ecogroup 4 - Open ocean sub-thermocline. Based on comparison with other species of the genus

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within PL3 [Atl.] zone (3.16-3.85Ma, top in Piacenzian stage). Data source: Aze et al. 2011
First occurrence (base): within PL1 [Atl.] zone (4.37-5.72Ma, base in Messinian stage). Data source: Aze et al. 2011

Plot of occurrence data:

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.

Hornibrook, N.B., de, (1981). Globorotalia in the late Pliocene and early Pleistocene of New Zealand. New Zealand Journal of Geology and Geophysics, 24: 263-292.


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Globorotalia crassaconica compiled by the pforams@mikrotax project team viewed: 19-11-2017

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