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Gohrbandt (1967) noted that the illustrations of Globigerina eocaena Guembel by Subbotina (1953) corresponded to his new species, although he did not formally place these in synonomy with his new species. He also acknowledged that Hagn and Lindenberg (1969), who selected a neotype for G. eocaena, did not consider Subbotina’s illustrations of G. eocaena to be correctly identified. Subbotina hagni has not been widely recorded by workers, perhaps because it has been generally grouped with S. eocaena populations. We have identified it in the Aragon Formation of Mexico and California, which indicates a widespread distribution for this species. [Olsson et al. 2006]
Catalog entries:
Globigerina hagni;
topotype: Globigerina hagni
holotype: Globigerina hagni
paratype: Globigerina hagniDistinguishing features: Large adult test, quadrate. Chambers globular, embracing. Aperture low-arched, umbilical-extraumbilical, with thin irregular lip.
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.
Diagnostic characters: The species is characterized by its generally large adult size, quadrate test, and globular, embracing, chambers with a low-arched, umbilical-extraumbilical aperture bordered by a thin irregular lip. [Olsson et al. 2006]
Geographic distribution: Apparently global in low to mid latitudes. [Olsson et al. 2006]
Aze et al. 2011 summary: Low to middle latitudes; based on Olsson et al. (2006a)
Isotope paleobiology: No data available. [Olsson et al. 2006]
Aze et al. 2011 ecogroup 3 - Open ocean thermocline. Based on light δ13C and relatively heavy δ18O. Sources cited by Aze et al. 2011 (appendix S3): Coxall et al. (2000)
Phylogenetic relations: Subbotina hagni belongs to a group of closely related Eocene large-sized subbotinids, which includes S. eocaena and S. corpulenta. It probably evolved from S. eocaena by an increase in number of chambers in the ultimate whorl and the development of a more quadrate-shaped test. [Olsson et al. 2006]
Most likely ancestor: Subbotina eocaena - at confidence level 4 (out of 5). Data source: Olsson et al. 2006 f6.2.
Geological Range:
Notes: Zone E7 to Zone 16. [Olsson et al. 2006]
Last occurrence (top): within E16 zone (33.90-34.68Ma, top in Priabonian stage). Data source: Eocene Atlas
First occurrence (base): within E7 zone (45.72-50.20Ma, base in Ypresian stage). Data source: Eocene Atlas
Plot of occurrence data:
Primary source for this page: Olsson et al. 2006 - Eocene Atlas, chap. 6, p. 142; Leckie et al. 2018 - Olig Atlas chap. 5 p.127.
Gohrbandt, K.H.A., (1967). Some new planktonic foraminiferal species from the Austrian Eocene. Micropaleontology, 13(3): 319-326. Guembel, C.W., (1868). Beitrage zur Foraminiferenfauna der nordalpinen Eocangebilde. K Bayer Akad Wiss Munchen, Math-Physik Cl, Abh, 10(2): 581-730. Gümbel, C.W., (1868). Beiträge zur Foraminiferenfauna der nordalpinen, älteren Eocängebilde oder der Kressenberger Nummulitenschichten. Abhandlungen der K. Bayerische Akademie der Wissenschaften, Cl. II,, 10(2): 579-730. Hagn, H. & Lindenberg, H.G., (1969). Revision der von C. W. Gümbel 1868 aus dem Eozän des bayerischen Alpenvorlandes beschriebenen planktonischen Foraminiferen. In: Brönnimann, P. and Renz, H.H. (Editors), Proceedings of the First International Conference on Planktonic Microfossils. E. J. Brill, Leiden, pp. 229-249. Leckie, R.M. & others, (2018). Taxonomy, biostratigraphy, and phylogeny of Oligocene and Lower Miocene Paragloborotalia and Parasubbotina. In: Wade, B.S. et al. (Editors), Atlas of Oligocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research Special Pulbication. 46, pp. 125-179. Olsson, R.K.; Pearson, P.N. & Huber, B.T., (2006). Taxonomy, biostratigraphy, and phylogeny of Eocene Catapsydrax, Globorotaloides, Guembelitrioides, Paragloborotalia, Parasubbotina, and Pseudoglobigerinella n. gen. In: Pearson, P.N. et al. (Editors), Atlas of Eocene Planktonic Foraminifera. Cushman Foundation Special Publication. 41 Allen Press, Lawrence, Kansas, pp. 67-110. Olsson, R.K.; Hemleben, C.; Huber, B.T. & Berggren, W.A., (2006). Taxonomy, biostratigraphy, and phylogeny of Eocene Globigerina, Globoturborotalita, Subbotina, and Turborotalita. In: Pearson, P.N. et al. (Editors), Atlas of Eocene Planktonic Foraminifera. Cushman Foundation Special Publication. 41 Allen Press, Lawrence, Kansas, pp. 111-168. Poore, R.Z. & Brabb, E.E., (1977). Eocene and Oligocene planktonic foraminifera from the Upper Butano sandstone and type San Lorenzo formation, Santa Cruz Mountains, California. Journal of Foraminiferal Research, 7(4): 249-272. Rögl, F. & Egger, H., (2012). A revision of lower Paleogene planktonic foraminifera described by KHA Gohrbandt from the northwestern Tethyan realm (Helvetic nappe system, Salzburg, Austria). Austrian Journal of Earth Sciences, 105: 39-49. Subbotina, N., (1953). Foraminiferes fossiles d'URSS Globigerinidae, Globorotaliidae, Hantkeninidae. Bureau de Recherches Geologiques et Minieres, 2239: 1-144. Toumarkine, M. & Luterbacher, H., (1985). Paleocene and Eocene planktic foraminifera. Plankton StratigraphyCambridge Univ. Press, Cambridge, 87-154 pp. Wade, B.S. & Pearson, P.N., (2008). Planktonic foraminiferal turnover, diversity fluctuations and geochemical signals across the Eocene/Oligocene boundary in Tanzania. Marine Micropaleontology, 68: 244-255. Warraich, M.Y. & Ogasawara, K., (2001). Tethyan Paleocene-Eocene planktic foraminifera from the Rakhi Nala and Zinda Pir land sections of the Sulaiman Range, Pakistan. Science Reports of the Institute of Geosciences, University of Tsukuba, Section B = Geological Sciences, 22: 1-59.References:
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Parasubbotina hagni compiled by the pforams@mikrotax project team viewed: 15-12-2018
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