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 |
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:
Geographic distribution
Phylogenetic relations
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
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. gsReferences:
Neogloboquadrina compiled by the pforams@mikrotax project team viewed: 14-11-2024
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