Pulleniatina obliquiloculata


Classification: pf_cenozoic -> Globorotaliidae -> Pulleniatina -> Pulleniatina obliquiloculata
Sister taxa: P. finalis, P. obliquiloculata, P. praecursor, P. primalis, P. spectabilis, P. praespectabilis, P. sp.,

Taxonomy

Citation: Pulleniatina obliquiloculata (Parker & Jones, 1865)
Rank: species
Basionym: Pullenia sphaeroides var. obliqueloculata Parker & Jones, 1865
Synonyms:

Catalog entries: Pullenia sphaeroides obliquiloculata, Globigerina antillensis, Pulleniatina obliquiloculata trochospira,

Type images:

Distinguishing features: Test globose, rounded, aperture extending from umbilical area to periphery and onto spiral side.

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 becoming streptospiral, very smooth surface, globular

Aperture: Umbilical-extraumbilical low archoften pustulate [Aze 2011, based on Kennett & Srinivasan 1983]

Coiling direction (in extant population): dextral


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

Test morphology: Test globose, initially trochospiral, later streptospiral almost involute, axial periphery broadly rounded, 4 to 5 broadly rounded chambers in the final whorl; sutures almost flush ; surface smooth , granular in apertural areas; umbilicus covered; aperture a low arch, extending from umbilical area to periphery and onto spiral side.

Size: >250µm

Character matrix

test outline:Subcircularchamber arrangement:Trochospiraledge view:Equally biconvexaperture:Umbilical-extraumbilical
sp chamber shape:Crescenticcoiling axis:Lowperiphery:N/Aaperture border:N/A
umb chbr shape:Subtriangularumbilicus:Narrowperiph margin shape:Broadly roundedaccessory apertures:None
spiral sutures:Flushumb depth:Shallowwall texture:Smoothshell porosity:Macroperforate: >2.5µm
umbilical or test sutures:Flushfinal-whorl chambers:4.0-5.0 N.B. These characters are used for advanced search. N/A - not applicable

Biogeography and Palaeobiology


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

In modern oceans an abundant, warm water, species [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): Shackleton & Vincent (1978); Pearson & Shackleton (1995)

Phylogenetic relations: Pu. obliquiloculata evolved from Pu. primalis via Pu. praecursor in the Early Pliocene Zone N19. Banner and Blow (1967) considered Pu. obliquiloculata finalis as the end member of the Pulleniatina lineage. In this book, we include Pu. finalis within Pu. obliquiloculata. Following Parker (1967) and Banner and Blow (1967), Pu. antillensis (Bermudez) and Pu. trochospira Hartono are considered junior synonyms of Pu. obliquiloculata.
From detailed ultrastructural studies, Burt and Scott (1975) suggested that Pu. obliquiloculata is spinose in the early part of its ontogeny.

Molecular Genotypes recognised (data from PFR2 database, June 2017). References: Ujiié & Lipps 2009; Ujiié et al. 2012; Seears et al. 2012.

Most likely ancestor: Pulleniatina praecursor - at confidence level 3 (out of 5). Data source: Kennett & Srinivasan 1983, fig 22; Aze et al. 2011.
Likely descendants: Pulleniatina finalis;

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant Data source: present in the plankton (SCOR WG138)
First occurrence (base): within N19 zone (4.37-5.20Ma, base in Zanclean stage). Data source: Chaisson & Pearson (1997)

Plot of occurrence data:

Primary source for this page: Kennett & Srinivasan 1983, p.202

References:

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

Banner, F. T. & Blow, W. H. (1967). The origin, evolution and taxonomy of the foraminiferal genus Pulleniatina Cushman, 1927. Micropaleontology. 13(2): 133-162. gs

Burt, B. J. & Scott, G. H. (1975). Spinosity and coiling geometry in Pulleniatina (Foraminiferida),. Journal of Foraminiferal Research. 5(3): 166-175. gs

Chaisson, W. P. & Pearson, P. N. P. (1997). Planktonic foraminifer biostratigraphy at Site 925: Middle Miocene–Pleistocene. Proceedings of the Ocean Drilling Program, Scientific Results,. 154: 3-31. gs

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

Parker, W. K. & Jones, T. R. (1865). On some foraminifera from the North Atlantic and Arctic Oceans, including Davis Straits and Baffin's Bay. Philos. Trans. R. Soc. London.. 155: 325-441. gs

Parker, F. L. (1967). Late Tertiary biostratigraphy (planktonic foraminifera) of tropical Indo-Pacific deep-sea cores. Bulletins of American Paleontology. 52(235): 115203-. gs

Pearson, P. N. & Shackleton, N. J. (1995). Neogene multispecies planktonic foraminifer stable isotope record, Site 871, Limalok Guyot. Proceedings of the Ocean Drilling Program, Scientific Results. 401-410. 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

Shackleton, N. J. & Vincent, E. (1978). Oxygen and carbon isotope studies in Recent Foraminifera from the southeast Indian Ocean. Marine Micropaleontology. 3: 1-13. 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


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Pulleniatina obliquiloculata compiled by the pforams@mikrotax project team viewed: 21-7-2019

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