Specimens of G. joli were first documented by Spezzaferri (1994) and named G. parawoodi. [Spezzaferri et al. 2018]
Catalog entries: Globigerinoides joli
Type images: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.
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 |
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;
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:
Primary source for this page: Spezzaferri et al. 2018 - Olig Atlas chap.9 p.280
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 OReferences:
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Globigerinoides joli compiled by the pforams@mikrotax project team viewed: 22-4-2021
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 |