pforams@mikrotax - Globoturborotalita rubescens

pforams@mikrotax - Globoturborotalita rubescens pforams@mikrotax - Globoturborotalita rubescens

Globoturborotalita rubescens

Classification: pf_cenozoic -> Globigerinidae -> Globoturborotalita -> Globoturborotalita rubescens
Sister taxa: G. rubescens, G. decoraperta ⟩⟨ G. apertura, G. connecta, G. druryi, G. nepenthes, G. woodi ⟩⟨ G. cancellata, G. occlusa, G. paracancellata, G. pseudopraebulloides ⟩⟨ G. barbula, G. bassriverensis, G. brazieri, G. eolabiacrassata, G. euapertura, G. gnaucki, G. labiacrassata, G. martini, G. ouachitaensis, G. sp.

LoeblichTappan 1994 pl208 04-6.JPG
LoeblichTappan 1994 pl208 01-3.JPG
K_S 1983 09-7.JPG
LoeblichTappan 1994 pl208 07-9.JPG
LoeblichTappan 1994 pl208 10-12.JPG
Lam & Leckie 2020 pl08 13.jpg
Latas et al 2023 f04 20.JPG

Taxonomy

Citation: Globoturborotalita rubescens (Hofker, 1956)

Rank: species

Basionym: Globigerina rubescens

Synonyms:

Globigerina (Zeaglobigerina) rubescens
Globigerina rosacea Bermudez & Seglie 1963 [according to Brummer & Kucera 2022]

Variants:

Globoturborotalita decorata Loeblich & Tappan 1994 [synyonymy from WoRMS database]

Catalog entries: Globigerina rubescens, Globoturborotalita decorata, Globigerina rosacea

Type images:

holotype: G. rubescens
lectotype: G. rubescens
x: G. rubescens

Distinguishing features:
Parent taxon (Globoturborotalita): Trochospiral test with a single, large, open umbilical aperture. Cancellate wall. 4-4½ chambers in final whorl
This taxon: Like G. decoraperta but very small and with small circular aperture, shell usually reddish.

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

Morphology:

Test small, trochospiral, equatorial periphery lobulate, chambers spherical to subspherical, four in the final whorl, increasing rapidly in size as added; sutures on both sides radial to slightly curved, gently depressed; surface distinctly cancellate; aperture small, rounded, bordered by a distinct rim, umbilical. [Kennett & Srinivasan 1983]

Wall type:

Spinose; Cancellate [Aze 2011]

Size:

<150µm

Character matrix
test outline: Lobate chamber arrangement: Trochospiral edge view: Concavo-convex aperture: Umbilical
sp chamber shape: Globular coiling axis: Moderate periphery: N/A aperture border: Thin lip
umb chbr shape: Globular umbilicus: Wide periph margin shape: Broadly rounded accessory apertures: None
spiral sutures: Weakly depressed umb depth: Deep wall texture: Cancellate shell porosity: Macroperforate: >2.5µm
umbilical or test sutures: Moderately depressed final-whorl chambers: 4-4 N.B. These characters are used for advanced search. N/A - not applicable

Biogeography and Palaeobiology

Geographic distribution

A tropical to sub-tropical species. [Kennett & Srinivasan 1983] Low latitudes [Aze et al. 2011, based on Kennett & Srinivasan (1983)]

In modern oceans a common, warm water, species [SCOR WG138]

Map of distribution from ForCenS database

ForCenS G_rubes.jpg

Isotope paleobiology

Aze et al. 2011 ecogroup 2 - Open ocean mixed-layer tropical/subtropical, without symbionts; based on comparison with other species of the genus.

Phylogenetic relations

This species is distinguished from Gg. (Zg.) decoraperta by its very small test size and small circular aperture. Gg. (Zg.) rubescens seems to have evolved from Gg. (Zg.) decoraperta during the Middle Pliocene and may be the modern representative of the subgenus Zeaglobigerina. Hofker 1977) placed this species within Globoturborotalita, which may have priority over Zeaglobigerina if Gg. (Zg.) rubescens is phylogenetically linked with the Zeaglobigerina lineage. [Kennett & Srinivasan 1983]

Molecular Genotypes recognised (data from PFR² database, June 2017), one genotype only from 9 sequences. Reference: Seears et al. 2012.

Most likely ancestor: Globoturborotalita decoraperta - at confidence level 3 (out of 5). Data source: Kennett & Srinivasan 1983, fig.8; Aze et al. 2011.

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant. Data source: present in the plankton (SCOR WG138)
First occurrence (base): within N20 zone (3.1-4.37Ma, base in Zanclean stage). Data source: Chaisson & Pearson (1997)

Plot of occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
Taxon plotted: Globoturborotalita rubescens, synonyms included - Globigerina rubescens; Globigerina rubescens rubescens; Globigerinoides rubescens; Globoturborotalita rubescens; Turborotalita rubescens; Zeaglobigerina rubescens;
See also space-time plot :: Samples map :: Parent: Globoturborotalita

Primary source for this page: Kennett & Srinivasan 1983, p.50

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. & Kucera, M. (2022). Taxonomic review of living planktonic foraminifera. Journal of Micropalaeontology. 41: 29-74. gs

Hofker, J. (1956c). Foraminifera Dentata, foraminifera of Santa Cruz and Thatch-Island, Virginia-Archipelago West-Indies. Copenhagen Univ. Zool. Mus. Spolia (Skrifler). 15: 1-237. gs

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

Lam, A. & Leckie, R. M. (2020a). Late Neogene and Quaternary diversity and taxonomy of subtropical to temperate planktic foraminifera across the Kuroshio Current Extension, northwest Pacific Ocean. Micropaleontology. 66(3): 177-268. gs

Latas, M., Pearson, P. N., Poole, C. R., Fabbrini, A. & Wade, B. S (2023). Globigerinoides rublobatus – a new species of Pleistocene planktonic foraminifera . Journal of Micropalaeontology. 42: 57-81. gs O

Loeblich, A. & Tappan, H. (1994). Foraminifera of the Sahul shelf and Timor Sea. Cushman Foundation for Foraminiferal Research, Special Publication. 31: 1-661. gs O

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

Siccha, M. & Kucera, M. (2017). ForCenS, a curated database of planktonic foraminifera census counts in marine surface sediment samples. Scientific Data. 4(1): 1-12. gs

Todd, R. (1957). Smaller foraminifera, in Geology of Saipan, Mariana Islands, Pt. 3, Paleontology. U.S. Geological Survey, Professional Paper. 280-H: 265-320. gs O

Globoturborotalita rubescens compiled by the pforams@mikrotax project team viewed: 26-9-2023

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Short stables page link: https://mikrotax.org/pforams/index.php?id=104156 Go to Archive.is to create a permanent copy of this page - citation notes

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test outline:	Lobate	chamber arrangement:	Trochospiral	edge view:	Concavo-convex	aperture:	Umbilical
sp chamber shape:	Globular	coiling axis:	Moderate	periphery:	N/A	aperture border:	Thin lip
umb chbr shape:	Globular	umbilicus:	Wide	periph margin shape:	Broadly rounded	accessory apertures:	None
spiral sutures:	Weakly depressed	umb depth:	Deep	wall texture:	Cancellate	shell porosity:	Macroperforate: >2.5µm
umbilical or test sutures:	Moderately depressed	final-whorl chambers:	4-4	N.B. These characters are used for advanced search. N/A - not applicable