Daughter taxa (time control age-window is: 0-800Ma) | ||||
Extant species | ||||
Globigerinella adamsi Near planispiral coiling & digitate chambers | ||||
Globigerinella calida Trochospiral coiling & slightly radially elongate chambers | ||||
Globigerinella radians Near planispiral coiling & slightly radially elongate chambers | ||||
Globigerinella siphonifera Near planispiral coiling & spherical chambers | ||||
Oligo-Miocene species | ||||
Globigerinella clavaticamerata Near planispiral coiling and last 1 or 2 chambers radially elongate | ||||
Globigerinella molinae Like G. navazuelensis but slightly more radially elongated last and/or penultimate chambers and single equatorial aperture. | ||||
Globigerinella navazuelensis Aperture symmetrical, sometimes double arch, with a thick rim. Planispiral coiling in the last whorl; chambers globular, not elongated. | ||||
Globigerinella obesa Low trochospiral lobulate test, 4 chambers in the last whorl, extraumbilical to equatorial aperture; bulloides-type wall texture. | ||||
Globigerinella praesiphonifera Like obesa but looser coiling and 5 slowly enlarging chambers in final whorl; | ||||
Globigerinella pseudobesa Test low trochospiral; 4 rapidly enlarging chambers in the final whorl | ||||
Globigerinella roeglina Like G. obesa but aperture higher and with thick rim, and last chamber slightly radially elongated | ||||
Oligocene Paratethyan species | ||||
Globigerinella megaperta Aperture unusually open and highly arched, formed from final 4 chambers; initial coiling streptospiral, | ||||
Globigerinella wagneri Like obesa but looser coiling and 4-5 chambers in final whorl; | ||||
Globigerinella sp. Specimens which cannot be assigned to established species |
Globigerinella is a common genus in the Neogene and is present in modern oceans. Globigerinella was considered by Bolli (1957) as a junior synonym of Hastigerina Thomson due to the common planispiral form. The advent of wall texture based classifications resulted in clear distinctions between these genera based on spine morphology and shell ultrastructure; see discussion in Kennett and Srinivasan (1983). DNA-based studies have revealed high genetic diversity in G. siphonifera with different genotypes having been detected with corresponding morphologies (Bijma and others, 1998; de Vargas and others, 2002). They show subtle differences in ecology and physiology, their empty shells are difficult to differentiate, although some small morphological differences are recognized, and should thus be best regarded as sister species (Huber and others, 1997; Bijma and others, 1998; de Vargas and others, 2002). We cannot exclude that also the fossil Globigerinella possessed multiple genotypes, but lacking DNA studies it cannot be demonstrated. The genus first appears in the lower Oligocene. A series of Oligocene globigerinellids described from the Paratethys region, Indian Ocean and Pacific, developed radially elongate chambers in the final whorl. Among these are several species previously attributed to the genus Protentella. We have reviewed the taxonomy of these digitate forms and explored possible evolutionary connections. We recognize however, that it is very possible that some or all of these forms represent independent derivations of similar clavate/digitate forms from a globigerinellid ancestor close to G. obesa or G. praesiphonifera. [Spezzaferri et al. 2018]
Catalog entries: Globigerinella, Hastigerina (Bolliella), Bolliella
Distinguishing features:
Parent taxon (Globigerinidae): Wall spinose, usually with 3½-6 globular chambers in final whorl, trochospiral or planispiral
This taxon: Test initially trochospiral, becoming nearly planispiral; globular to ovate chambers; aperture umbilical; fine spines cover the test
Morphology:
Wall type:
Geographic distribution
Isotope paleobiology
Phylogenetic relations
Most likely ancestor: Globoturborotalita - at confidence level 3 (out of 5). Data source: Spezzaferri et al. 2018.
Likely descendants: Beella; Protentella; Quiltyella;
plot with descendants
Geological Range:
Notes: Lower Oligocene Zone O1 (Spezzaferri, 1994) to Recent (e.g., Hemleben and others, 1989) [Spezzaferri et al. 2018]
Last occurrence (top): Extant. Data source: Total of ranges of the species in this database
First occurrence (base): within O1 zone (32.10-33.90Ma, base in Priabonian stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
Primary source for this page: Spezzaferri et al. 2018 - Olig Atlas chap.6 p.188; Kennett & Srinivasan 1983, p.234
Banner, F. T. & Blow, W. H. (1959). The classification and stratigraphical distribution of the Globigerinaceae. Palaeontology. 2(1): 1-27. gs Bijma, J., Hemleben, C., Huber, B. T., Erlenkeuser, H. & Kroon, D. (1998). Experimental determination of the ontogenetic stable isotope variability in two morphotypes of Globigerinella siphonifera (d’Orbigny). Marine Micropaleontology. 35: 141-160. gs Bolli, H. M. (1957b). Planktonic foraminifera from the Oligocene-Miocene Cipero and Lengua formations of Trinidad, B.W.I. In, Loeblich, A. R. , Jr., Tappan, H., Beckmann, J. P., Bolli, H. M., Montanaro Gallitelli & E. Troelsen, J. C. (eds) Studies in Foraminifera. U.S. National Museum Bulletin . 215: 97-123. gs Brady, H. B. (1879). Notes on some of the reticularian Rhizopoda of the "Challenger" expedition. I.- On new or little known arenaceous types. Quarterly Journal of Microscopical Science. 19: 20-63. gs Chaproniere, G. C. H. (1991). Pleistocene to Holocene planktic foraminiferal biostratigraphy of the Coral Sea, offshore Queensland, Australia. BMR Journal of Australian Geology and Geophysics. 12: 195-221. gs Cushman, J. A. (1927a). An outline of a re-classification of the Foraminifera. Contributions from the Cushman Laboratory for Foraminiferal Research. 3: 1-105. gs O Kennett, J. P. & Srinivasan, M. S. (1983). Neogene Planktonic Foraminifera. Hutchinson Ross Publishing Co., Stroudsburg, Pennsylvania. 1-265. gs Spezzaferri, S., Coxall, H. K., Olsson, R. K. & Hemleben, C. (2018a). Taxonomy, biostratigraphy, and phylogeny of Oligocene Globigerina, Globigerinella, and Quiltyella n. gen. 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 6): 179-214. gs References:
Globigerinella compiled by the pforams@mikrotax project team viewed: 10-12-2024
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