Pulleniatina primalis


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

Taxonomy

Citation: Pulleniatina primalis Banner & Blow, 1967
Rank: species
Basionym: Pulleniatina primalis
Variants:

Pu. praepulleniatina Bronniman and Resig (1971) - an intermediate form which links N. acostaensis with Pu. primalis [according to Kennett & Srinivasan 1983]

Catalog entries: Pulleniatina primalis, Pulleniatina praepulleniatina

Type images:

Distinguishing features: Aperture restricted to the umbilical 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 intially becoming streptospiral, broadly rounded chambers, spherical test covered in thick cortex

Aperture: Interiomarginal umbilical-extraumbilical low arch at the base of the final chamber [Aze 2011, based on Kennett & Srinivasan 1983]


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

Test morphology: Test medium, low trochospiral, becoming streptospiral, equatorial periphery lobulate; axial periphery broadly rounded; chambers subspherical, 4 to 5, increasing slowly in size, except for the final one, which suddenly becomes more embracing; spiral sutures slightly curved, depressed; surface smooth for the most part, pitted surface of early chambers being gradually obliterated by the development of a thick cortex, granular in appearance (PI. 49, Fig. 1); umbilicus covered; aperture interiomarginal, extraumbilical-umbilical, a low arch at the base of the final chamber, no apertural rim or lip visible.

Character matrix

test outline:Subcircularchamber arrangement:Trochospiraledge view:Inequally 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:Weakly depressedfinal-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)]

[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): this study

Phylogenetic relations: Pu. primalis is distinguished from Pu. praecursor by its aperture, which is restricted to the umbilical side and does not reach the periphery of the previous whorl. This species differs from Pu. spectabilis in lacking the acutely angled periphery characteristic of that species. Pu. primalis evolved from Neogloboquadrina acostaensis. Pu. praepulleniatina, described by Brönniman and Resig (1971), represents an intermediate form, which links N. acostaensis with Pu. primalis.

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

Biostratigraphic distribution

Geological Range:
Last occurrence (top): in lower part of PL3 [Atl.] zone (28% up, 3.7Ma, in Piacenzian stage). Data source: Wade et al. (2011), additional event; position within zone determined by linear interpolation from data in table 1 of Wade et al. (2011).
First occurrence (base): in upper part of M13b subzone (73% up, 6.8Ma, in Tortonian stage). Data source: Wade et al. (2011), additional event; position within zone determined by linear interpolation from data in table 1 of Wade et al. (2011).

Plot of occurrence data:

Primary source for this page: Kennett & Srinivasan 1983, p.200

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

Brönnimann, P. & Resig, J. (1971). A Neogene globigerinacean biochronologic time-scale of the southwestern Pacific. Initial Reports of the Deep Sea Drilling Project. 7(2): 1235-1469. gs

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

Wade, B. S., Pearson, P. N., Berggren, W. A. & Pälike, H. (2011). Review and revision of Cenozoic tropical planktonic foraminiferal biostratigraphy and calibration to the geomagnetic polarity and astronomical time scale. Earth-Science Reviews. 104: 111-142. gs


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Pulleniatina primalis compiled by the pforams@mikrotax project team viewed: 16-12-2019

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Short stable page link: http://mikrotax.org/pforams/index.php?id=104209 Go to Archive.is to create a permanent copy of this page - citation notes



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