pforams@mikrotax - Neogloboquadrina pforams@mikrotax - Neogloboquadrina


Classification: pf_cenozoic -> Globorotaliidae -> Neogloboquadrina
Sister taxa: Fohsella, Globoconella, Globorotalia, Neogloboquadrina, Pulleniatina
Daughter taxa (time control age-window is: 0-800Ma)
pachyderma and closely related species
Neogloboquadrina pachyderma
Test low trochospiral, quadrate (4 to 4½ chambers in the final whorl) umbilicus narrow, deep; Predominantly sinistral coiling
Neogloboquadrina incompta
Like N. pachyderma but predominantly dextral coiling. Coiling looser and umbilicus more open than in N. pachyderma.
Neogloboquadrina inglei
Like N. pachyderma but larger, with rounded axial periphery and inflated chambers.
continuosa -> dutertrei lineage
Neogloboquadrina dutertrei
5-6 inflated chambers in final whorl, umbilicus open, broad and deep; umbilical plates often present
Neogloboquadrina humerosa
Like N. acostaensis but 6+ chambers in final whorl, wider umbilicus, and reduced apertural lip.
Neogloboquadrina acostaensis
Like N. continuosa but 5-5½ chambers in final whorl, chambers more inflated, and a wide apertural rim or plate
Neogloboquadrina atlantica
Like N. dutertrei but tighter coiling (& so narrower umbilicus) and granular wall.
Neogloboquadrina sp.
Specimens which cannot be assigned to established species


Citation: Neogloboquadrina Bandy, Frerichs & Vincent 1967
taxonomic rank: genus
Type species: Globigerina dutertrei d'Orbigny 1839
Taxonomic discussion: Bandy et al. (1967) proposed Neogloboquadrina as a result of an evolutionary study of the type species dutertrei. In gross morphology, the type species is superficially similar to Globoquadrina Finlay, 1947, and Dentoglobigerina Blow, 1979, but phylogenetically it is quite distinct. The genus includes N. continuosa-No acostaensis-N. humerosa-N. pachyderma-N. dutertrei (Text Fig. 21), which have commonly been referred to as Globorotalia, Turborotalia, Globoquadrina, and Globigerina by various authors depending largely upon the apertural position of the species. It also includes N. atlantica (Berggren), a form that seems to be restricted to the North Atlantic in the Late Neogene but for which phylogenetic relationships are still unclear.
An important part of the evolutionary development of the genus is from N. continuosa to N. acostaensis to N. humerosa to N. dutertrei. This evolution involves a progressive change from interiomarginal-extraumbilical to umbilically restricted aperture, accompanied by the development of umbilical plates and progressive increase in number of chambers in the final whorl. The change of apertural position, observed in the progressive evolution from N. continuosa to N. dutertrei, is also reflected in the ontogenetic development of N. dutertrei, where the aperture shows a gradual change from a globorotaliid condition to globigerine type. As a result, it is one of the most variable of Neogene genera. The evolutionary development of the Neogloboquadrina lineage has been well documented by a number of authors (Parker, 1967; Blow, 1969; Lamb and Beard, 1972; Srinivasan and Kennett, 1976). [Kennett & Srinivasan 1983]

Catalog entries: Neogloboquadrina

Distinguishing features:
Parent taxon (Globorotaliidae): Macroperforate, non-spinose
This taxon: Cancellate wall; umbilical-extraumbilical 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.



Biogeography and Palaeobiology

Geographic distribution

Most but not all, Neogloboquadrina species outside of the tropical areas are marked by a surface covered by large euhedral calcite rhombs, producing a rosette pattern. The surface ultrastructure of the tropical forms, which have reticulate pitting, closely resembles those of the Jenkinsella lineage [=Paragloborotalia], but the two groups are phylogenetically unrelated [Kennett & Srinivasan 1983]

Phylogenetic relations
Srinivasan and Kennett (1976) indicate a complex evolution during the Late Miocene through Quaternary in which tropical forms (N. acostaensis to N. dutertrei humerosa to N. dutertrei dutertrei Group A) and subtropical forms (N. pachyderma to N. dutertrei subcretacea to N. dutertrei dutertrei Group B) evolve in parallel and are linked by intermediate forms. A partially alternate view for the evolution of N. eggeri (which we consider to be a junior synonym of N. dutertrei) is offered by Maiya et al. (1976). They suggest a rapid evolution during the latest Pliocene of N. asanoi to N. kagaensis to N. himiensis to N. eggeri. We believe this lineage is closely linked to that we observed for N. subcretacea to N. dutertrei Group B, although their forms are slightly different, especially that of N. kagaensis. The lineage they describe is probably a north Pacific variant of the lineage described by Srinivasan and Kennett (1976).
The earliest member of Neogloboquadrina is probably N. continuosa, which seems to have developed from "Gr." nana in the Early Miocene. [Kennett & Srinivasan 1983]

NB It is now conventional to include continuosa in Paragloborotalia, but N. pachyderma and N. acostaensis are inferred to have evolved separately from P. continuosa this makes Neogloboquadrina polyphyletic. [editor's comment - JRY 2021]

Molecular genetic data stongly support separation of N. incompta, N. pachyderma and N. dutertrei but do not provide a clear pattern for their relationships. (e.g Darling et al. 2006, Morard et al. 2015)

Most likely ancestor: Paragloborotalia - at confidence level 3 (out of 5). Data source: the inferred ancestor of oldest species - N. acostaensis and N. pachyderma is P. continuosa.
Likely descendants: Pulleniatina; plot with descendants

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant. Data source: Total of ranges of the species in this database
First occurrence (base): within M13a subzone (8.58-9.83Ma, base in Tortonian stage). Data source: Total of ranges of species in this database

Plot of occurrence data:

Primary source for this page: Kennett & Srinivasan 1983, p.190


Blow, W. H. (1969). Late middle Eocene to Recent planktonic foraminiferal biostratigraphy. In, Bronnimann, P. & Renz, H. H. (eds) Proceedings of the First International Conference on Planktonic Microfossils, Geneva, 1967. E J Brill, Leiden 380-381. gs

d'Orbigny, A. (1839a). Foraminiferes. In, de la Sagra, R. (ed.) Histoire physique et naturelle de l'Ile de Cuba. A. Bertrand, Paris, France 1-224. gs

Darling, K. F., Kucera, M., Kroon, D. & Wade, C. M. (2006). A resolution for the coiling direction paradox in Neogloboquadrina pachyderma. Paleoceanography. 21: A2011-. gs

Lamb, J. L. & Beard, J. H. (1972). Late Neogene planktonic foraminifers in the Caribbean, Gulf of Mexico, and Italian stratotypes,. University of Kansas Paleontological Contributions, Articles. 57: 1-67. gs O

Maiya, S., Saito, T. & Sato, T. (1976). Late Cenozoic planktonic foraminiferal biostratigraphy of northwest Pacific sedimentary sequences. In, Takayanagi, Y. & Saito, T. (eds) Progress in Micropaleontology. Micropaleontology Press, New York 395-422. gs

Morard, R. et al. (2015). PFR2: a curated database of planktonic foraminifera 18S ribosomal DNA as a resource for studies of plankton ecology, biogeography and evolution. Molecular Ecology Resources. 15: 1472-1485. gs

Parker, F. L. (1967). Late Tertiary biostratigraphy (planktonic foraminifera) of tropical Indo-Pacific deep-sea cores. Bulletins of American Paleontology. 52(235): 115203-. gs

Srinivasan, M. S. & Kennett, J. P. (1976). Evolution and phenotypic variation in the Late Cenozoic Neogloboquadrina dutertrei plexus. In, Takayanagi, Y. & Saito, T. (eds) Progress in Micropaleontology. American Museum of Natural History Micropaleontology Press, New York 329-355. gs


Neogloboquadrina compiled by the pforams@mikrotax project team viewed: 23-6-2024

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