Globigerina bulloideus

NB TAXA WHICH ORIGINATE IN THE OLIGOCENE ARE NOT INCLUDED YET
Classification: pf_neogene -> Globigerinidae -> Globigerina -> Globigerina bulloideus
Sister taxa: G. bulloides, G. bulloideus, G. druryi, G. falconensis, G. umbilicata,

Taxonomy

Citation: Globigerina bulloideus (Crescenti 1966)
Rank: species
Basionym: Globigerinoides bulloideus Crescenti 1966
Taxonomic discussion: Not in list of Aze et al. (2011) but the species is used by both Kennett & Srinivasan (1983) and Bolli & Saunders (1985)

Catalog entries: Globigerinoides bulloideus;

Type images:

Short diagnosis: Like G. bulloides but with supplemetary apertures on the spiral side

Description


Test morphology: Test low to medium-high-trochospiral, wider than high; chambers spherical to subspherical, the four chambers of the last whorl increasing rapidly in size; sutures on spiral and umbilical side gently curved and depressed; surface hispid with spine bases and slightly pitted on earlier chambers; umbilicus wide, deep; primary aperture interiomarginal, umbilical, large, semicircular arch bordered by a distinct rim. Last few chambers show a single supplementary aperture opposite the primary one. [Kennett & Srinivasan 1983]

Biogeography and Palaeobiology


Geographic distribution: Cool sub-tropical to temperate [Kennett & Srinivasan 1983]

Phylogenetic relations: In gross morphology, this species closely resembles Globigerina (Gg.) bulloides, from which it evolved by developing supplementary apertures on spiral side. [Kennett & Srinivasan 1983]

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within N19 zone (4.37-5.20Ma, top in Zanclean stage). Data source: Kennett & Srinivasan (1983)
First occurrence (base): within N17b zone (5.72-6.60Ma, base in Messinian stage). Data source: Kennett & Srinivasan (1983)

Plot of occurrence data:

Primary source for this page: Kennett & Srinivisan 1983, p.60

References:

Bolli, H.M. & Saunders, J.B., (1985). Oligocene to Holocene low latitude planktic foraminifera. In: Bolli, H.M., Saunders, J.B. and Perch-Neilsen, K. (Editors), Plankotn Stratigraphy. Cambridge University Press, Cambridge, UK, pp. 155-262.

Crescenti, U., (1966). Sulla biostratigrafia del Miocene affiorante al confine Marchigiano-Abruzzese. Geologica Romana, 5: 1-54.

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


Globigerina bulloideus compiled by the pforams@mikrotax project team viewed: 23-5-2017

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