Turborotalita clarkei


Classification: pf_cenozoic -> Globigerinidae -> Turborotalita -> Turborotalita clarkei
Sister taxa: T. clarkei, T. cristata, T. humilis, T. quinqueloba, T. praequinqueloba, T. carcoselleensis, T. sp.,

Taxonomy

Citation: Turborotalita clarkei (Rögl & Bolli, 1973)
Rank: species
Basionym: Globigerina clarkei

Catalog entries: Globigerina clarkei,

Type images:

Distinguishing features: Five chambers & small, compact outline

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: Small, slightly compressed trochospiral, final chamber distinctly spinose, can be heavily encrusted

Aperture: Interiomarginal umbilical-extraumbilical very low arch [Aze 2011, based on Brummer & Kroon 1988]

Coiling direction (in extant population): mixed


Wall type: Spinose; Cancellate [Aze 2011]

Size: <150µm

Character matrix

test outline:Lobatechamber arrangement:Trochospiraledge view:Inequally biconvexaperture:Umbilical-extraumbilical
sp chamber shape:Globularcoiling axis:Lowperiphery:N/Aaperture border:Thin flange
umb chbr shape:Globularumbilicus:Narrowperiph margin shape:Broadly roundedaccessory apertures:None
spiral sutures:Moderately depressedumb depth:Shallowwall texture:Spinoseshell porosity:Finely Perforate: 1-2.5µm
umbilical or test sutures:Moderately depressedfinal-whorl chambers:5.0-5.0 N.B. These characters are used for advanced search. N/A - not applicable

Biogeography and Palaeobiology


Geographic distribution: Low latitudes [Aze et al. 2011, based on Brummer & Kroon (1988)]

In modern oceans an abundant, temperate water, species [SCOR WG138]


Isotope paleobiology: Aze et al. 2011 ecogroup 2 - Open ocean mixed-layer tropical/subtropical, without symbionts. Based on ∂13C lighter than species with symbionts; also with relatively light ∂18O. Sources cited by Aze et al. 2011 (appendix S3): this study

Most likely ancestor: Turborotalita cristata - at confidence level 3 (out of 5). Data source: Aze et al. 2011.

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant Data source: present in the plankton (SCOR WG138)
First occurrence (base): within PT1a subzone (0.61-1.88Ma, base in Gelasian stage). Data source: Aze et al. 2011

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

Brummer, G. J. A. & Kroon, D. (1988). Planktonic foraminifers as tracers of ocean-climate history. Free University Press, Amsterdam. 1-346. gs

Rögl, F. & Bolli, H. M. (1973). Holocene to Pleistocene planktonik foraminifera of LEG 15, site 147 (Cariaco Basin (Trench), Caribbean Sea) and their climatic interpretation. Initial Reports of the Deep Sea Drilling Project. 15: 553-579. gs


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Turborotalita clarkei compiled by the pforams@mikrotax project team viewed: 24-7-2019

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Short stable page link: http://mikrotax.org/pforams/index.php?id=104247 Go to Archive.is to create a permanent copy of this page - citation notes



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