pforams@mikrotax - Globigerinoides joli

Globigerinoides joli

Classification: pf_cenozoic -> Globigerinidae -> Globigerinoides -> Globigerinoides joli
Sister taxa: G. tenellus, G. elongatus, G. conglobatus, G. ruber ⟩⟨ G. obliquus, G. extremus, G. altiaperturus, G. eoconglobatus, G. joli, G. neoparawoodi ⟩⟨ G. kennetti, G. bollii, G. italicus ⟩⟨ G. mitra, G. seigliei, G. subquadratus, G. diminutus ⟩⟨ G. bulloideus, G. sp.

Olig Atlas pl09-04 13-15.JPG

Taxonomy

Citation: Globigerinoides joli Spezzaferri, in Spezzaferri et al. 2018

Rank: species

Synonyms:

Globigerinoides parawoodi Keller.—Spezzaferri, 1994:pl. 13, figs. 6a-c [lower Miocene Subzone M1b, DSDP Hole 516F, South Atlantic Ocean].

Taxonomic discussion:

Specimens of G. joli were first documented by Spezzaferri (1994) and named G. parawoodi. [Spezzaferri et al. 2018]

Catalog entries: Globigerinoides joli

Type images:

holotype: G. joli
holotype: G. joli
paratype: G. joli
paratype: G. joli
paratype: G. joli
paratype: G. joli
paratype: G. joli

Distinguishing features: Like G. neoparawoodi but with more lobate outline and a thick rim bordering the aperture.

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

Wall type: Normal perforate, spinose, ruber/sacculifer-type wall.

Morphology: Low trochospiral, subovate and lobulate in outline, chambers globular arranged in 3 whorls, chambers in the last whorl increase regularly and rapidly in size, sutures depressed, straight and radial on both sides; umbilicus open, wide, enclosed by surrounding chambers. Primary aperture an umbilical and distinct circular high arch bordered by a distinct rim. One low to moderately high arched supplementary sutural aperture on the spiral side opposite the primary aperture. [Spezzaferri et al. 2018]

Size: Maximum length of holotype 0.4 mm, maximum width 0.29 mm. [Spezzaferri et al. 2018]

Character matrix

test outline:	Lobate	chamber arrangement:	Trochospiral	edge view:	Equally biconvex	aperture:	Umbilical
sp chamber shape:	Globular	coiling axis:	Low-moderate	periphery:	N/A	aperture border:	N/A
umb chbr shape:	Globular	umbilicus:	Wide	periph margin shape:	Broadly rounded	accessory apertures:	Sutural
spiral sutures:	Strongly depressed	umb depth:	Deep	wall texture:	Cancellate	shell porosity:	Macroperforate: >2.5µm
umbilical or test sutures:	Strongly depressed	final-whorl chambers:	3.5-4.0	N.B. These characters are used for advanced search. N/A - not applicable

Biogeography and Palaeobiology

Geographic distribution: Observed at high latitudes, in the Caribbean Sea, Gulf of Mexico, and at temperate latitudes in the South Atlantic Ocean. Rarely present in the Kerguelen Plateau region. [Spezzaferri et al. 2018]

Isotope paleobiology: No data available. [Spezzaferri et al. 2018]

Phylogenetic relations: Globigerinoides joli probably evolved from G. neoparawoodi n. sp. in Subzone M1b. [Spezzaferri et al. 2018]

Most likely ancestor: Globigerinoides neoparawoodi - at confidence level 2 (out of 5). Data source: Spezzaferri et al. 2018.
Likely descendants: Globigerinoides altiaperturus;

Biostratigraphic distribution

Geological Range:
Notes: Globigerinoides joli ranges from Subzone M1b to Zone M4? Spezzaferri (1994). Additional studies are needed to confirm the presence of this species in younger Miocene sediments. [Spezzaferri et al. 2018]
Last occurrence (top): within M4 zone (16.38-17.54Ma, top in Burdigalian stage). Data source: Spezzaferri et al. 2018
First occurrence (base): within M1b subzone (21.12-22.44Ma, base in Aquitanian stage). Data source: Spezzaferri et al. 2018

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
(NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Globigerinoides

Primary source for this page: Spezzaferri et al. 2018 - Olig Atlas chap.9 p.280

References:

Keller, G. (1981a). Origin and evolution of the genus Globigerinoides in the Early Miocene of the northwestern Pacific, DSDP Site 292. Micropaleontology. 27(3): 293-304. gs

Spezzaferri, S. (1994). Planktonic foraminiferal biostratigraphy and taxonomy of the Oligocene and lower Miocene in the oceanic record. An overview. Palaeontographia Italica. 81: 1-187. gs

Spezzaferri, S., Olsson, R. K. & Hemleben, C. (2018c). Taxonomy, biostratigraphy, and phylogeny of Oligocene to Lower Miocene Globigerinoides and Trilobatus. In, Wade, B. S., Olsson, R. K., Pearson, P. N., Huber, B. T. & Berggren, W. A. (eds) Atlas of Oligocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication. 46(Chap 9): 269-306. gs V O

Globigerinoides joli compiled by the pforams@mikrotax project team viewed: 5-3-2021

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Short stable page link: https://mikrotax.org/pforams/index.php?id=104326 Go to Archive.is to create a permanent copy of this page - citation notes

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